ECAT Pre Engineering Physics Chapter 12 MCQ Test With Answer

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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	If electric and gravitational force on an electron in a uniform electric field will be	A. E=mg/q B. E=q/mg C. E=,g/q D. E=qg/m
2	The nature of capacity of electrostatic capacitor depends on	A. Shape B. Size C. Thickness of plates D. Area
3	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	A. 1.92 N B. 19.2 N C. 12 N D. 0.192 N
4	The SI unit of electric flux is	A. Weber B. Nm²C^-1 C. NmC^-1 D. Nm^-2C
5	A current of 1.6 A is passed through a solution of CuSO_{4. How many Cu}²⁺ions are liberated in one minute?	A. 3 x 10²⁰ B. 3 x 10¹⁰ C. 6 x 10²⁰ D. 6 x 10¹⁰
6	Which of the following represents an electric current?	A. C^-1 B. CS^-1 C. J.S^-1 D. dynes^-1
7	The graphical representation of ohm's law is	A. hyperbola B. straight line C. ellipse D. parabola
8	The electric flux is linked with a surface will be maximum when	A. The surface is held parallel to the electric field B. The surface is held perpendicular to the electric field C. The surface makes an angle of 45° with the electric field D. All of the above
9	10⁶electrons are moving through a wire per second, the current developed is	A. 1.6 x 10^-19 B. 1 A C. 1.6 x 10^-15A D. 10⁶A
10	The potential difference across each resistance in series combination is	A. same B. different C. zero D. none of these

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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

Some charge is being given to a conductor. Then its potential

Calculate the amount of charge flowing in 2 minutes in a wire of resistance 10Ωwhen a potential difference of 20 V is applied between its ends

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

The charge carriers in electrolyte are positive and negative

The resistivity of a substance depends upon the

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

An electric charge at rest 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

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

One electron volt is equal to

Capacitance of two or more capacitors

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

The unit of resistance is

Resistor is a device which convert electric energy to

Electric generators which convert mechanical energy into

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

The SI unit of electric field intensity is

One moving a charge of 20 coulombs by 2 cm, 2 J of work is done, then the potential difference between the points is

Potentiometer is more sensitive than voltmeter, because

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

The capacitance of a parallel plate capacitor depends upon

Resistance of a conductor is increased, the currant will

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

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

One coulomb per second is equal to

A wire of radius r has resistance R. If it is stretched to a wire of r/2 radius, then the resistance becomes

The ohm's is defined as

A current of 1.6 A is passed through a solution of CuSO4. How many Cu2+ions are liberated in one minute?

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

The potential difference across the conductors should be maintained constant by connecting the ends of wire to the terminal of a device called a source of

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ECAT Physics Chapter 12 Important MCQ's

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A current of 1.6 A is passed through a solution of CuSO_{4. How many Cu}²⁺ions are liberated in one minute?