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

The SI unit of electric field intensity is

Question # 2

The electric field will be uniform

Question # 3

The liquid which conduct current is known as

Question # 4

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

Question # 5

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

Question # 6

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

Question # 7

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

Question # 8

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

Question # 9

The nature of capacity of electrostatic capacitor depends on

Question # 10

The SI unit of conductivity is

Question # 11

Cause of heat production in a current carrying conductor is

Question # 12

The current through a metallic conductor is due to the motion of

Question # 13

The conductivity of a superconductor is

Question # 14

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

Question # 15

The electrode connected with the positive terminal of the current source is called

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ECAT Physics Chapter 12 Important MCQ's

Sr.# Question Answer
1 The charge carriers in gases are
A. electrons
B. ions
C. protons
D. ions and electrons
2 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
A. 2 R
B. R/4
C. R/2
D. R
3 The unit of conductance is
A. ohm
B. meter
C. mho
D. ohm-meter
4 The fractional change in resistance per kelvin is known as
A. temperature coefficient
B. resistance coefficient
C. super temperature
D. critical temperature
5 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
6 The unit of resistivity is
A. ohm
B. ohm-m2
C. ohm-meter
D. ohm-m-1
7 When an electron is accelerated through a P.D. of an one volt, it will acquire energy equal to
A. One joule
B. One erg
C. One electron volt
D. None of these
8 Capacitance of two or more capacitors
A. Increases in series combination
B. Increases in parallel combination
C. Remains unchanged
D. None of the above
9 One joule is equal to
A. 1.6 x 1019eV
B. 6.25 x 1018eV
C. 1.6 x 1818eV
D. 6.25 x 1019eV
10 Ohm is the unit of
A. current
B. capacitance
C. energy
D. resistance

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