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 metal plate of thickness half the separation between the capacitor plates of capacitance C is inserted. The new capacitance is

Question # 2

Physicist George Simon ohm was a

Question # 3

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

Question # 4

One coulomb per second is equal to

Question # 5

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

Question # 6

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

Question # 7

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

Question # 8

The resistance of a conductor does not depend on its

Question # 9

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

Question # 10

The unit of conductance is

Question # 11

The potential difference across the conductors should be maintained constant by connecting the ends of wire to the terminal of a device called a source of

Question # 12

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 # 13

A charge of 0.1 c accelerated through a potential difference of 1000V acquires kinetic energy

Question # 14

A 60 W bulb operates on 220 V supply. The current flowing through the bulb is

Question # 15

For two resistance wires joined in parallel, the resultant resistance is 6/5 ohm. When one of the resistance wire breaks, the effective resistance becomes 2 ohm. The resistance of the broken wire is

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ECAT Physics Chapter 12 Important MCQ's

Sr.# Question Answer
1 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
2 Magnetic effect at a point caused due to flow a current depend upon the
A. Quantity of current
B. Distance from current
C. Both the quantity of current and distance from current element
D. None of the all
3 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
4 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
5 The nature of capacity of electrostatic capacitor depends on
A. Shape
B. Size
C. Thickness of plates
D. Area
6 Which one of the following is the unit of electric field intensity
A. JC-1
B. Vm-1
C. Cm-1
D. CJ-1
7 The unit of intensity of electric field is
A. newton/coluomb
B. jule/coluomb
C. volt x metre
D. newton/metre
8 The capacity of a parallel plat capacitor depends on the
A. Type to metal used
B. Thickness of plates
C. Potential applied across the plates
D. Separation between the plates
9 The value of electrical constant of proportionality k is
A. 9 x 109Nm2C-2
B. 9 x 10-9Nm2C-2
C. 9 x 1010Nm2C2
D. 9.85 x 10-12N-1C-2
10 The SI unit of permitivity is
A. Nm2C2
B. N-1m-2C2
C. NmC2
D. Nm2C-1

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