ECAT Pre General Science Chapter 12 online mcq test with answers for Physics chapter 12 (Electrostatics)

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ECAT Physics Chapter 12 Important MCQ's

Sr.#	Question	Answer
1	A proton is about 1840 times heavier than an electron. When it is accelerated by a potential difference of 1 KV, its kinetic energy will be	A. 1840 KeV B. 1/1840 KeV C. 1 KeV D. 920 KeV
2	The colour sequence in a carbon resistor in red, brown, orange and silver. The resistance of the resistor is	A. 21 x 10³+ 10% B. 23 x 10¹+ 10% C. 21 x 10³+ 5% D. 12 x 10³+ 5%
3	The unit of intensity of electric field is	A. newton/coluomb B. jule/coluomb C. volt x metre D. newton/metre
4	The SI unit of permitivity is	A. Nm²C² B. N^-1m^-2C² C. NmC² D. Nm²C^-1
5	Electron volt is the unit of.	A. Potential difference B. Energy C. Resistance D. Capacitance
6	The resistance of the given conductor can be increased by	A. Increasing the area B. Changing resistivity C. Decreasing the length D. None of the above because change does not matter because in any case the volume remains the same
7	The SI unit of electric field intensity is	A. CN^-1 B. NC^-1or Vm^-1 C. JC^-1 D. AV^-1
8	The thermistors are usually made of	A. Metals with low temperature coefficient of resistivity B. Metals with high temperature coefficient of resistivity C. Metal oxides with high temperature coefficient of resistivity D. Semi conducting materials having low temperature coefficient of resistivity
9	The minimum resistance that can be obtained by connecting 5 resistance of 1/4Ωeach is	A. 4/5Ω B. 5/4Ω C. 20Ω D. 0.05 Ω
10	A charge of 0.1 c accelerated through a potential difference of 1000V acquires kinetic energy	A. 200 J B. 100 J C. 1000 J D. 400 J

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ECAT Pre General Science Physics Chapter 12 MCQ Test With Answer

MCQ's Test For ECAT Pre General Science Physics Chapter 12 Electrostatics

ECAT Pre General Science Physics Chapter 12 Electrostatics

The ratio of the gravitational force Fgto the electrostatic force Febetween two electrons at the same distance apart is approximately

If 2.2 kilowatt power is transmitted through 1 10 ohm line at 22000 volt, the power loss in the form of heat will be

In case of a parallel plate capacitor if the plate separation is doubled and plate area is halved, the capacitance becomes

106electrons are moving through a wire per second, the current developed is

Capacitance of two or more capacitors

The unit of intensity of electric field is

A current of 1.6 A is passed through a solution of CuSO4. How many Cu2+ions are liberated in one minute?

For two resistance wires joined in parallel, the resultant resistance is 6/5 ohm. When one of the resistance wire breaks, the effective resistance becomes 2 ohm. The resistance of the broken wire is

A medium of dielectric constant 'K' is introduced between the plates of parallel plate condenser. As a result its capcitance

A (100 W , 200 W) bulb is connected to a 160 V power supply. The power consumption would be

Electric flux is defined by the relation

In RC series circuit the time during which the capacitor acquires 0.63 times the equilibrium charge is called

The dot product of electric field intensity E and vector area A is called

The graphical representation of ohm's law is

Resistor is a device which convert electric energy to

A sheet of aluminium foil of negligible thickness is introduced between the plates of a capacitor. The capacitance of the capacitor

The powers of tow electric bulbs are 100 W and 200 W. Both of them are joined with 220 V mains. The ratio of resistances of their filaments will be

If we increase the distance between two plates of the capacitor, the capacitance will

Free electrons are

If the length of the conductor is double and its cross sectional area is halved, its conductance will

The unit of resistivity is

Resistance of a conductor depends upon

A point charge Q is placed at the mid-point of a line joining two charges. 4q and q. if the net force on charge q is zero. then Q must be equal to

The value of electrical constant of proportionality k is

Three resistors of resistance 2,3 and 6 ohms are connected in parallel, their equivalent resistance is

One joule is equal to

If the distance of separation between two chares is increased, the electrical potential energy of the system will

A capacitor of capacity 1μF is charged to 1 KV. The energy stored in J

When a dielectric material is introduced between the plates of a charged condenser the electric field between the plates

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ECAT Physics Chapter 12 Important MCQ's

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The ratio of the gravitational force F_gto the electrostatic force F_ebetween two electrons at the same distance apart is approximately

10⁶electrons are moving through a wire per second, the current developed is

A current of 1.6 A is passed through a solution of CuSO_{4. How many Cu}²⁺ions are liberated in one minute?