ECAT Pre Computer Science Chapter 12 MCQ Test With Answer

MCQ's Test For ECAT Physics Chapter 12 Electrostatics

Try The MCQ's Test For ECAT Physics Chapter 12 Electrostatics

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ECAT Physics Chapter 12 Electrostatics

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Question # 1

One coulomb of charge is created by

Question # 2

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

Question # 3

Ohm established a relation between

Question # 4

Resistance of a conductor depends upon

Question # 5

The SI unit of capacitance is

Question # 6

An electron of charge e coulomb passes through a potential difference of V volts its energy in joules will be

Question # 7

One coulomb per second is equal to

Question # 8

The resistivity of a substance depends upon the

Question # 9

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

Question # 10

The material in the form of wire or rod or plate which leads the current into or cut of the electrolyte is known as

Question # 11

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

Question # 12

If the distance between the plates of a parallel plate condenser of capacity 10μF is doubled then new capacity will be

Question # 13

One joule is equal to

Question # 14

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

Question # 15

The ohm's is defined as

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ECAT Physics Chapter 12 Important MCQ's

Sr.# Question Answer
1 The energy stored in a charge capacitor
A. 1/2CV2
B. 1/2C2V
C. 1/2C/V2
D. None of these
2 A ten ohm electric heater operates on a 110 V line. Calculate the rate at which it develops heat in watts
A. 1310 W
B. 670 W
C. 810 W
D. 1210 W
3 The SI unit of current is
A. watt
B. coulomb
C. volt
D. ampere
4 An electric charge at rest is
A. Only an electric field
B. Only a magnetic field
C. Both electric and magnetic fields
D. None of the above
5 One coulomb of charge is created by
A. 10 electrons
B. 1.6 x 10-19electrons
C. 6.25 x 1018electrons
D. 6.25 x 1021electrons
6
Question Image
A. 5μF
B. 10μF
C. 3μF
D. 6μF
7 If we plot graph between potential difference (V) and current (I) obeying ohm's law, it will give us
A. parabola
B. straight line
C. hyper bola
D. ellipse
8 One electron volt is equal to
A. 1.6 x 1019eV
B. 6.25 x 1018 eV
C. 1.6 x 1018 eV
D. 6.25 x 1019eV
9 Current provided by a battery is maximum when
A. Internal resistance equal to external resistance
B. Internal resistance is greater than external resistance
C. Internal resistance is less then external resistance
D. None of these
10 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
A. 0.1 watt
B. 1 watt
C. 10 watt
D. 100 watt

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