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

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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

If a charged spherical conductor of radius 10 cm has potential V at a point distance 5 cm from its centre, then the potential at a point distance 15 cm from the centre will be

One coulomb of charge is created by

The charge carriers in gases are

The resistance of a conductor does not depend on its

The capacity of a parallel plat capacitor depends on the

The speed of randomly moving electrons depends upon

Three resistors of resistance R each are combined in various ways. Which of the following cannot be obtained?

Electron volt is the unit of

The unit of resistivity is

Electric flux is defined by the relation

A parallel plate capacitor is first charged and then a dielectric slab is introduced between the plates. The quantity that remains unchanged is

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

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

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 relation between charge 'Q' and current 'I' is given by

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

One electron volt is equal to

The substances whose resistance decreases with the increase in temperature these substances have coefficient of

Specific resistance of a wire depends upon

A ten ohm electric heater operates on a 110 V line. Calculate the rate at which it develops heat in watts

The SI unit of current is

The thermistors are usually made of

Heating effect caused by an electric circuit is written

A metal plate of thickness half the separation between the capacitor plates of capacitance C is inserted. The new capacitance is

Battery is charged in motor cars, which is based on

The liquid which conduct current is known as

In a Milikian's oil drop experiment the charge on an oil drop is calculated to be 6.35 x 10-19C. The number of excess electrons on the drop is

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

In Pakistan electricity is supplied for domestic use at 220 V, it is supplied at 110 V in USA. If the resistance of a 60 W bulb for use in Pakistan is R, the resistance of a 60 W bulb for use in USA will be

Which one of the following causes production of heat when current is set up in a wire?

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Test Questions

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

In a Milikian's oil drop experiment the charge on an oil drop is calculated to be 6.35 x 10^-19C. The number of excess electrons on the drop is

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