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

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

Question # 2

The unit of resistance is

Question # 3

The relation V = IR represents

Question # 4

The resistance of an incandescent lamp is

Question # 5

A parallel plate capacitor is first charged and then a dielectric slab is introduced between the plates. The quantity that remains unchanged is

Question # 6

One coulomb of charge is created by

Question # 7

In Pakistan electricity is supplied for domestic use at 220 V, it is supplied at 110 V in USA. If the resistance of a 60 W bulb for use in Pakistan is R, the resistance of a 60 W bulb for use in USA will be

Question # 8

Two conductors having the same type of charges are connected by a conducting wire. There would not be any amount of charges on them if

Question # 9

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

Question # 10

The nature of capacity of electrostatic capacitor depends on

Question # 11

In a charged capacitor the energy is stored in

Question # 12

Which of the following represents an electric current?

Question # 13

The electric potential at the surface of an atomic nucleus (Z = 50) of radius 9.0 x 10-15 is

Question # 14

If a 40 watt light bulb burns for 2 hours. how much heat is generated

Question # 15

What is the current is a 2 x 106ohm resistor having a potential difference of 2 x 103volts?

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ECAT Physics Chapter 12 Important MCQ's

Sr.# Question Answer
1 The concept of field theory was put forward by
A. Franklin
B. Kepler
C. Oersted
D. Michael Faraday
2 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
A. Coulomb's law
B. Gauss's law
C. Biot-Sarwat law
D. Ampere's law
3 The energy stored in a charge capacitor
A. 1/2CV2
B. 1/2C2V
C. 1/2C/V2
D. None of these
4 The unit of resistivity is
A. ohm
B. ohm-m2
C. ohm-meter
D. ohm-m-1
5 Ohm established a relation between
A. voltage and resistance
B. voltage and charge
C. voltage and current
D. voltage resistance and charge
6 Electric flux is defined by the relation
A. E.A.
B. E x A
C. E/A
D. none of these
7 If an electron of charge 'e' is accelerated through a potential difference V., it will acquire energy
A. Ve
B. V/e
C. e/V
D. 2Ve
8 The electric lines of force are
A. Imaginary
B. Physically existing everywhere
C. Physically existing near the charge
D. All of the above
9 Electron volt is the unit of
A. Potential difference
B. Energy
C. Resistance
D. Capacitance
10 Resistance of a conductor depends upon
A. the quantity of current passing through it
B. the voltage applied between its end
C. its dimensions, physical state and nature of its material
D. all of the above

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