Question # 1

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

Choose an answer

64 W

80 W

100 W

125 W

In a building, there are 15 bulbs of 40 watts, 5 bulbs of 100 watts, 5 fans of 80 watts and a heater of 1 kilowatt. The voltage of the electric main is 220 volts. The minimum efficiency of the main fuse of the building will be

Choose an answer

0.4 A

11.4 A

9.8 A

10.6 A

The ratio of the gravitational force F_gto the electrostatic force F_ebetween two electrons at the same distance apart is approximately

Choose an answer

9.8

24 x 10¹⁹

24 x 10⁴²

24 x 10^-44

The statement "the electric force of repulsion or attraction between two point charges is directly proportional to the product of the charges and inversely proportional to square of the distance between them" refer to

Choose an answer

Coulomb's law

Gauss's law

Biot-Sarwat law

Ampere's law

Choose an answer

5μF

10μF

3μF

6μF

The potential difference across each resistance in series combination is

Choose an answer

same

different

zero

none of these

The force of repulsion between two point charges is F, when these are at a distance 0.1 m apart. Now the point charges are replaced by sphere of radii 5 cm each having the same charge as that of the respective point charges. The distance between their centre is again kept 0.1 m ; then the force of repulsion will

Choose an answer

Increase

Decrease

Remain F

Become 10F/9

Ohm established a relation between

Choose an answer

voltage and resistance

voltage and charge

voltage and current

voltage resistance and charge

The capacitance of a parallel plate capacitor depends upon

Choose an answer

Area of the plates

Separation between the plates

Medium between the plates

All of the above

Solar cell converts sunlight directly into

Choose an answer

potential energy

thermal energy

mechanical energy

electrical energy

10⁶electrons are moving through a wire per second, the current developed is

Choose an answer

1.6 x 10^-19

1 A

1.6 x 10^-15A

10⁶A

The electric lines of force are

Choose an answer

Imaginary

Physically existing everywhere

Physically existing near the charge

All of the above

Ohm is the unit of

Choose an answer

current

capacitance

energy

resistance

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

Choose an answer

Negative

Positive

Infinite

Zero

In a charged capacitor the energy is stored in

Choose an answer

Both in positive and negative charges

Positive charges

The edges of the capacitor plates

The electric field between the plates

Electron volt is the unit of.

Choose an answer

Potential difference

Energy

Resistance

Capacitance

More Classes

Other Links

ECAT Physics Chapter 12 Electrostatics Online Test MCQs With Answers

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer