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	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	A. 2 R B. R/4 C. R/2 D. R
2	A car battery has e.m.f 12 volt and internal resistance 5 x 10^-2ohm. If it draws 60 ampere current, the terminal voltage of the battery will be	A. 5 volt B. 3 volt C. 15 volt D. 9 volt
3	The relation between the charge Q of a parallel plate capacitor and the P.D between its plates is	A. Q=V/C B. Q=C/V C. Q=1/2CV D. Q=CV
4	Which one of the following is the unit of electric field intensity	A. JC^-1 B. Vm^-1 C. Cm^-1 D. CJ^-1
5	The potential difference across each resistance in series combination is	A. same B. different C. zero D. none of these
6	Which one of the following causes production of heat when current is set up in a wire?	A. Fall of electrons from higher orbits to lower orbits B. Inter-atomic collisions C. Inter-electron collisions D. Collisions of conduction electron with atoms
7	The SI unit of permitivity is	A. Nm²C² B. N^-1m^-2C² C. NmC² D. Nm²C^-1
8	Three resistance 500,500 and 50 ohms are connected in series across 555 volts mains. The current flowing through them will be	A. 0.52 A B. 1 mA C. 0.7 mA D. 1.4 A
9	If we increase the distance between two plates of the capacitor, the capacitance will	A. Increase B. Decrease C. Remain same D. First increase then decrease
10	Heating effect caused by an electric circuit is written	A. H = I²Rt B. H = I²R C. H = IR²t D. H = IR²

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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

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

If the resistance of 2 ohm and 4 ohm are connected in parallel, the equivalent resistance will be

Force acting upon a charged particle kept between the plates of a charged condenser if F. IF one of the plates of the condenser is removed, force acting on the same will become

Magnetic effect at a point caused due to flow a current depend upon the

The SI unit of permitivity is

Current provided by a battery is maximum when

The charge carriers in gases are

The SI unit of current is

Three resistance 500,500 and 50 ohms are connected in series across 555 volts mains. The current flowing through them will be

The unit of intensity of electric field is

If the two charges in Coulomb's law have double distance between them, then electric force

The electric intensity at infinite distance from the point charge will be

A cube of metal is given a positive charge Q. For the above system, which of the following statements is true?

A capacitor is charged with a battery and then it is disconnected. A slab of dielectric is now inserted between the plates, then

Two conductors having the same type of charges are connected by a conducting wire. There would not be any amount of charges on them if

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

If electric and gravitational force on an electron in a uniform electric field will be

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

The resistance of the given conductor can be increased by

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

If one volt is needed to cause a current of one ampere to flow in a conductor, its resistance is

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

Thermocouple is an arrangement of two different metals

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

In bringing an electron towards another electron, electrostatic potential energy of system

The resistance of a conductor does not depend on its

Consider a spherical shell of metal at he centre of which a positive point charge is kept

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

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

Coulomb's force between two point charges depends upon

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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