ECAT Pre Engineering Physics Chapter 12 MCQ Test With Answer

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ECAT Physics Chapter 12 Important MCQ's

Sr.#	Question	Answer
1	The capacity of a parallel plat capacitor depends on the	A. Type to metal used B. Thickness of plates C. Potential applied across the plates D. Separation between the plates
2	The dot product of electric field intensity E and vector area A is called	A. Electric potential B. Electric flux C. Electric field D. Magnetic field
3	The charge carriers in electrolyte are positive and negative	A. protons B. electrons C. ions D. none of these
4	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
5	The force between two chares 0.06 m apart is 5 N. If each charge is moved towards the other by 0.01 m, then the force between them will become	A. 7.20 N B. 11.25 N C. 22.50 N D. 45.00
6	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
7	Magnetic effect at a point caused due to flow a current depend upon the	A. Quantity of current B. Distance from current C. Both the quantity of current and distance from current element D. None of the all
8	Which one of the following is the unit of electric field intensity	A. JC^-1 B. Vm^-1 C. Cm^-1 D. CJ^-1
9	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
10	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%

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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

Resistance of a conductor is increased, the currant will

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

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

Ohm established a relation between

A certain charge liberates 0.8 g of oxygen. The same charge will liberate. how many g of silver?

A 60 W bulb operates on 220 V supply. The current flowing through the bulb is

The electric potential at the surface of an atomic nucleus (Z = 50) of radius 9.0 x 10-15 is

A uniform resistance wire of Length L and diameter d has a resistance R. Another wire of same material has length, 4L and diameter 2d, the resistance will be

In a charged capacitor the energy is stored in

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

Electron volt is the unit of

The charge carriers in electrolyte are positive and negative

One electron volt is equal to

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

Electron volt is the unit of.

A charge of 0.1 c accelerated through a potential difference of 1000V acquires kinetic energy

The minimum resistance that can be obtained by connecting 5 resistance of 1/4Ωeach is

A condenser of capacity 50μF is charged to 10 V.The energy stored is

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

Specific resistance of a wire depends upon

A 50 volt battery is connected across 10 ohm resistor. The current is 4.5 A. The internal resistance of the battery is

Two point charges A and B separated by a distance R attract each other with a force of 12 x 10-3N. The force between A and B when the charges on them are doubled and distance is halved

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

The resistance of a conductor does not depend on its

Resistor is a device which convert electric energy to

The fractional change in resistance per kelvin is known as

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

A 10 F capacitor is charged to a potential difference of 50 V and is connected to another uncharged capacitor in parallel. Now the common potential difference becomes 20 volt.The capacitance of second capacitor is

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

If an electron of charge 'e' is accelerated through a potential difference V., it will acquire energy

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ECAT Physics Chapter 12 Important MCQ's

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The electric potential at the surface of an atomic nucleus (Z = 50) of radius 9.0 x 10^-15is

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

Two point charges A and B separated by a distance R attract each other with a force of 12 x 10^-3N. The force between A and B when the charges on them are doubled and distance is halved