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ECAT Physics Chapter 13 Current Electricity Online Test
| Sr. # | Questions | Answers Choice |
|---|---|---|
| 1 | The flux through a closed surface depends upon: | <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: "Times New Roman","serif";mso-fareast-font-family:"Times New Roman";mso-fareast-theme-font: minor-fareast">Shape of geometry of the closed surface<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: "Times New Roman","serif";mso-fareast-font-family:"Times New Roman";mso-fareast-theme-font: minor-fareast">Charge enclosed<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: "Times New Roman","serif";mso-fareast-font-family:"Times New Roman";mso-fareast-theme-font: minor-fareast">Nature of the medium<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: "Times New Roman","serif";mso-fareast-font-family:"Times New Roman";mso-fareast-theme-font: minor-fareast">Both (A) and (B)<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: "Times New Roman","serif";mso-fareast-font-family:"Times New Roman";mso-fareast-theme-font: minor-fareast">Both (B) and (C)<o:p></o:p></span></p> |
| 2 | Flux through a closed surface of any shape and flux
through the surface of a sphere drawn around a charge are: |
<p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: "Times New Roman","serif"">Different<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: "Times New Roman","serif"">Same<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: "Times New Roman","serif"">Such that it is greater in the first case<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: "Times New Roman","serif"">Such that it is greater in the second case<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: "Times New Roman","serif";mso-fareast-font-family:"Times New Roman";mso-fareast-theme-font: minor-fareast">None of these<o:p></o:p></span></p> |
| 3 | Certain charge +q is placed at the center of a sphere. At each of the sphere,The directions of electric intensity and vector area are: |
<p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: "Times New Roman","serif"">Same<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: "Times New Roman","serif"">Different<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: "Times New Roman","serif"">Opposite to each other<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: "Times New Roman","serif"">At 60º with each other<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: "Times New Roman","serif"">Both (B) and (C)<o:p></o:p></span></p> |
| 4 | The electric flux through any surface depends upon: | <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: "Times New Roman","serif"">Intensity of electric field<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: "Times New Roman","serif"">Area of the surface<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: "Times New Roman","serif"">Angle between intensity and area<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: "Times New Roman","serif"">All of these<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: "Times New Roman","serif"">None of these<o:p></o:p></span></p> |
| 5 | When certain area A is held parallel to the field lines, then: | <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: "Times New Roman","serif"">No lines cross this area<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: "Times New Roman","serif"">Maximum lines pass through this area<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: "Times New Roman","serif"">The number of lines are between zero and maximum<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: "Times New Roman","serif"">Both (A) and (B) correct<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: "Times New Roman","serif"">None of these<o:p></o:p></span></p> |
| 6 | The number of field lines passing through unit area held perpendicular to the field lines represent: | <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: "Times New Roman","serif"">Flux in that region<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: "Times New Roman","serif"">Intensity of the field<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: "Times New Roman","serif"">Charge<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: "Times New Roman","serif"">Area of the region<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: "Times New Roman","serif"">None of these<o:p></o:p></span></p> |
| 7 | Electric flux is: |
<span style="font-family: "Times New Roman", serif; font-size: 12pt;">Cross product of two vector</span><p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: "Times New Roman","serif""><o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: "Times New Roman","serif"">Dot product of two vectors<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: "Times New Roman","serif"">A vector quantity<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: "Times New Roman","serif"">A scalar quantity<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: "Times New Roman","serif"">Both (B) and (D)<o:p></o:p></span></p> |
| 8 | An inkjet printer uses in its operation: |
<p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: "Times New Roman","serif"">Neutrons only<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: "Times New Roman","serif"">Mesons only<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: "Times New Roman","serif"">Positrons and photons<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: "Times New Roman","serif"">An electric charge<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: "Times New Roman","serif"">None of these<o:p></o:p></span></p> |
| 9 | An important part of inkjet printer is: | <span style="font-size:12.0pt;line-height:107%; font-family:"Times New Roman","serif";mso-fareast-font-family:Calibri; mso-fareast-theme-font:minor-latin;mso-ansi-language:EN-US;mso-fareast-language: EN-US;mso-bidi-language:AR-SA">Toner</span> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: "Times New Roman","serif"">Drum<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: "Times New Roman","serif"">Deflection plates<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: "Times New Roman","serif"">Heated roles<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: "Times New Roman","serif"">None of these<o:p></o:p></span></p> |
| 10 | The inkjet printer ejects a thin stream of: | <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: "Times New Roman","serif"">Water<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: "Times New Roman","serif"">Oil<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: "Times New Roman","serif"">Ink<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: "Times New Roman","serif"">Any of above<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: "Times New Roman","serif"">None of these<o:p></o:p></span></p> |
| 11 | Aluminum is a: | <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: "Times New Roman","serif"">Good insulator<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: "Times New Roman","serif"">Bad conductor<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: "Times New Roman","serif"">Both (A) and (B)<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: "Times New Roman","serif"">Excellent conductor<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: "Times New Roman","serif"">Semiconductor<o:p></o:p></span></p> |
| 12 | Selenium is: | <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: "Times New Roman","serif"">An insulator<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: "Times New Roman","serif"">A conductor<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: "Times New Roman","serif"">Insulator in the dark and becomes conductor when exposed to light<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: "Times New Roman","serif"">Conductor in the dark only<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: "Times New Roman","serif"">None of these<o:p></o:p></span></p> |
| 13 | An important part of photocopier is: | <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: "Times New Roman","serif"">Toner cartridge<o:p></o:p></span></p> <span style="font-family: "Times New Roman", serif; font-size: 12pt;">Deflection plates</span><p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: "Times New Roman","serif""><o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: "Times New Roman","serif"">Charging electrode<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: "Times New Roman","serif"">Print head<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: "Times New Roman","serif"">None of these<o:p></o:p></span></p> |
| 14 | An example of photoconductor is: | <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: "Times New Roman","serif"">Boron<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: "Times New Roman","serif"">Carbon<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: "Times New Roman","serif"">Iron<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: "Times New Roman","serif"">Aluminum<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: "Times New Roman","serif"">Selenium<o:p></o:p></span></p> |
| 15 | Xerography means: | <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: "Times New Roman","serif"">Dry writing<o:p></o:p></span></p> <span style="font-family: "Times New Roman", serif; font-size: 12pt;">Wet writing</span><p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: "Times New Roman","serif""><o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: "Times New Roman","serif"">Poor writing<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: "Times New Roman","serif"">Excellent writing<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: "Times New Roman","serif"">Both (A) and (B)<o:p></o:p></span></p> |
