ECAT Pre Engineering Physics Chapter 12 MCQ Test With Answer

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Humera Noor 27 - Dec - 2024 19 Min 28 Sec 65/120
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suzi 10 - Feb - 2026 08 Min 22 Sec 64/120

ECAT Physics Chapter 12 Important MCQ's

Sr.#	Question	Answer
1	A 100 W, 200 V bulb is connected to a 160 volts supply. The actual power consumption would be	A. 64 W B. 80 W C. 100 W D. 125 W
2	The SI unit of permitivity is	A. Nm²C² B. N^-1m^-2C² C. NmC² D. Nm²C^-1
3	A closed surface contains two equal and opposite charges. The net electric flux from the surface will be	A. Negative B. Positive C. Infinite D. Zero
4	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. 3/5 ohm B. 2 ohm C. 6/5 ohm D. 3 ohm
5	The capacitance of a parallel plate capacitor depends upon	A. Area of the plates B. Separation between the plates C. Medium between the plates D. All of the above
6	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
7	Electric flux is defined by the relation	A. E.A. B. E x A C. E/A D. none of these
8	At ordinary temperature, an increase in temperature increases the conductivity of	A. Conductor B. Semiconductor C. Insulator D. Alloy
9	One joule is equal to	A. 1.6 x 10¹⁹eV B. 6.25 x 10¹⁸eV C. 1.6 x 18¹⁸eV D. 6.25 x 10¹⁹eV
10	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

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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

Electron volt is the unit of.

If two bulbs one of 60 W and other of 100 W are connected in parallel, then which one of the following will flow more?

The unit of resistivity is

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)

The relation between the charge Q of a parallel plate capacitor and the P.D between its plates is

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)

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

Electric generators which convert mechanical energy into

The nature of capacity of electrostatic capacitor depends on

The capacitance of a parallel plate capacitor depends upon

The resistance of the given conductor can be increased by

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

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

The electric flux from a closed surface

A conducting wire is drawn to double its length. Final resistivity of the material will be

The SI unit of conductivity is

A hollow insulated conduction sphere is given a positive charge of 10μC. What will be the electric field at the centre of the sphere if its radius is 2 meters?

When three identical bulbs of 60 watt, 200 volt rating are connected in series to a 200 volt supply, the power drawn by them will be

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

Electric flux is defined by the relation

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

A charge Q is divided into two parts q and Q - q and separated by a distance R. The force of repulsion between them will be maximum when

One coulomb of charge is created by

The potential difference across each resistance in series combination is

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

The concept of field theory was put forward by

If we plot graph between potential difference (V) and current (I) obeying ohm's law, it will give us

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

The ohm's is defined as

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