15th Chapter

### 10th class Physics Ch 15 (English Medium)

Here you can prepare 10th Physics English Medium Chapter 15 (Electromagnetism) Test. Click the button for 100% free full practice test..

## Matric Part 2/10th Class Physics Chapter 15 MCQ Test With Answer for Chapter 15 (Electromagnetism)

10th Class Physics Chapter 15 KPK Boards Online Test

### Matric Part 2/10th Class Physics Chapter 15 MCQ Test With Answer for Chapter 15 (Electromagnetism)

1 Iron core is used in tranformer to:
• A. Enhance the flux
• B. Decrease the flux
• C. Keep flux the same
• D. botha a and b
2 <p class="MsoNormal">In C.R.O grid is always connected with potential:<o:p></o:p></p>
• A. <p class="MsoNormal">Negative<o:p></o:p></p>
• B. <p class="MsoNormal">Positive<o:p></o:p></p>
• C. <p class="MsoNormal">High positive<o:p></o:p></p>
• D. <p class="MsoNormal">Zero positive<o:p></o:p></p>
3 Magnetic effect of electric current was first discovered by:
• B. Ampere
• C. Volta
• D. Lenz
4 If the change of current in a circuit induces a current in another circuit, this phenomena is known as:
• A. Self induction
• B. Mutual induction
• C. Electromagnetic induction
• D. None mutual induction
5 <p class="MsoNormal">Eight bits combine to form:<o:p></o:p></p>
• A. <p class="MsoNormal">A byte<o:p></o:p></p>
• B. <p class="MsoNormal">Megabyte<o:p></o:p></p>
• C. <p class="MsoNormal">Kilobyte<o:p></o:p></p>
• D. <p class="MsoNormal">Gigabyte<o:p></o:p></p>
6 Which type of energy is converted into mechanical energy in the D.C. Motor.
• A. Magnetic energy
• B. Heat energy
• C. Electrical energy
• D. Chemical energy
7 What is the direction of the magnetic field lines inside a bar magnet?
• A. From north pole to south pole
• B. From south pole to north pole
• C. From side to side
• D. There are no magnetic field lines.
8 The shape of magnetic lines of force in case of a straight current carrying conductor is:
• A. Eliptical
• B. Trangular
• C. Rectangular
• D. Circular
9 Changing magnetic field in a closed circuit can induce:
• A. e.m.f
• B. Electric current
• C. Force
• D. Both A and B
10 A transformer has 100 turns in its primary and 500 turns in secondary coil. If 6 volts D.C is applied across its primary, the voltage induced across its secondary coil will be:
• A. 0 volt
• B. 30 volts
• C. 45 volts
• D. 60 volts

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