ECAT Pre Engineering Physics Chapter 12 MCQ Test With Answer

Top Scorers Of Physics ECAT Pre Engineering Chapter 12 Electrostatics MCQ`s Test

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ECAT Physics Chapter 12 Important MCQ's

Sr.#	Question	Answer
1	The ratio of the gravitational force F_gto the electrostatic force F_ebetween two electrons at the same distance apart is approximately	A. 9.8 B. 24 x 10¹⁹ C. 24 x 10⁴² D. 24 x 10^-44
2	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	A. 1/3 V B. 2/3 V C. 3/2 V D. 3V
3	The electric field due to an infinite long thin wire at a distance R varies as	A. 1/R B. 1/R² C. R D. R²
4	A wire is bent into a ring of radius R is given a charge q. The magnitude of the electrical field at the centre of the ring is	A. Two B. 1/2 C. Zero D. 3/2
5	In case of a parallel plate capacitor if the plate separation is doubled and plate area is halved, the capacitance becomes	A. Four-fold B. One-half C. One-fourth D. Zero
6	In bringing an electron towards another electron, electrostatic potential energy of system	A. Decreases B. Increases C. Remains uncharged D. Becomes zero
7	An electric dipole is at the centre of a hollow sphere of radius r. The total normal electric flux through the sphere is (here Q is the charge and d is the distance between the two charges of the dipole)	A. Q/4πr² B. 2Q/4πr² C. Q.d D. Zero
8	The resistance of 20 cm long wire is 10Ω. When the length is changed to 40 cm. The new resistance is	A. 10Ω B. 20Ω C. 30Ω D. 40Ω
9		A. 5μF B. 10μF C. 3μF D. 6μF
10	The relation between charge 'Q' and current 'I' is given by	A. Q = I/t B. Q = It C. Q = I²t D. Q = I²/t

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ECAT Pre Engineering Physics Chapter 12 MCQ Test With Answer

MCQ's Test For Physics ECAT Pre Engineering Chapter 12 Electrostatics

Physics ECAT Pre Engineering Chapter 12 Electrostatics

One electron volt is equal to

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

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

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

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

Capacitance of two or more capacitors

An electric dipole is at the centre of a hollow sphere of radius r. The total normal electric flux through the sphere is (here Q is the charge and d is the distance between the two charges of the dipole)

If a 40 watt light bulb burns for 2 hours. how much heat is generated

The resistance of 20 cm long wire is 10Ω. When the length is changed to 40 cm. The new resistance is

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

A piece of fuse wire melts when a current of 15 ampere flows through it. With this current. If it dissipates 22.5 W, the resistance of fuse wire will be

When an electron is accelerated through a P.D. of an one volt, it will acquire energy equal to

Battery is charged in motor cars, which is based on

An electric charge at rest is

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

A closed surface contains two equal and opposite charges. The net electric flux from the surface will be

The charge carriers in gases are

Electron volt is the unit of.

The nature of capacity of electrostatic capacitor depends on

The energy required to charge a capacitor of 5μF by connecting D.C. source of 20 KV is

One coulomb of charge is created by

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

A wire is bent into a ring of radius R is given a charge q. The magnitude of the electrical field at the centre of the ring is

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

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

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

The energy stored in a charge capacitor

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

A point charge A of charge +4μC and another B of charge -1μC are placed in air at a distance 1 m apart. Then the distance of the point on the line joining the charge B, where the resultant electric field is zero, is (in m)

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ECAT Physics Chapter 12 Important MCQ's

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