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 electric intensity at infinite distance from the point charge will be	A. Infinite B. Positive C. Zero D. Negative
2	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
3	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%
4	Electric flux is defined by the relation	A. E.A. B. E x A C. E/A D. none of these
5	An electron of charge e coulomb passes through a potential difference of V volts its energy in joules will be	A. V/e B. eV C. e/V D. V
6	Ohm is the unit of	A. current B. capacitance C. energy D. resistance
7	The relation between the charge Q of a parallel plate capacitor and the P.D between its plates is	A. Q=V/C B. Q=C/V C. Q=1/2CV D. Q=CV
8	When a dielectric material is introduced between the plates of a charged condenser the electric field between the plates	A. Decreases B. Increases C. No change D. May increase or decresase
9	The SI unit of electric field intensity is	A. CN^-1 B. NC^-1or Vm^-1 C. JC^-1 D. AV^-1
10	Resistor is a device which convert electric energy to	A. Heat energy B. Chemical energy C. Elastic energy D. All of the above

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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

The electric field intensity at a point due to a point charge

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

Free electrons are

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

The charge per unit time through any cross-section of a conductor is called

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

In a Milikian's oil drop experiment the charge on an oil drop is calculated to be 6.35 x 10-19C. The number of excess electrons on the drop is

The graphical representation of ohm's law is

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

Ohm established a relation between

The minimum charge on any object can not be less than

Coulomb's force between two point charges depends upon

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

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?

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

The energy stored in a charge capacitor

At ordinary temperature, an increase in temperature increases the conductivity of

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?

Electric flux is defined by the relation

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

The unit of resistance is

The electric flux from a closed surface

Coulomb force, when any material medium is placed between two charges

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

Resistor is a device which convert electric energy to

A medium of dielectric constant 'K' is introduced between the plates of parallel plate condenser. As a result its capcitance

The potential difference across each resistance in series combination is

The SI unit of current is

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

The electric intensity at infinite distance from the point charge will be

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ECAT Physics Chapter 12 Important MCQ's

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In a Milikian's oil drop experiment the charge on an oil drop is calculated to be 6.35 x 10^-19C. The number of excess electrons on the drop is