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 minimum charge on any object can not be less than

Question # 2

A capacitor of capacity 1μF is charged to 1 KV. The energy stored in J

Question # 3

Physicist George Simon ohm was a

Question # 4

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

Question # 5

The minimum resistance that can be obtained by connecting 5 resistance of 1/4Ωeach is

Question # 6

Current provided by a battery is maximum when

Question # 7

A capacitor is charged with a battery and then it is disconnected. A slab of dielectric is now inserted between the plates, then

Question # 8

The thermistors are usually made of

Question # 9

The charge carriers in gases are

Question # 10

One coulomb of charge is created by

Question # 11

The unit of resistance is

Question # 12

The resistivity of a substance depends upon the

Question # 13

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

Question # 14

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

Question # 15

A point charge A of charge +4μC and another B of charge -1μC are placed in air at a distance 1 m apart. Then the distance of the point on the line joining the charge B, where the resultant electric field is zero, is (in m)

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ECAT Physics Chapter 12 Important MCQ's

Sr.# Question Answer
1 If one volt is needed to cause a current of one ampere to flow in a conductor, its resistance is
A. one ohm
B. one joule
C. one volt
D. one ampere
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 unit of conductance is
A. ohm
B. meter
C. mho
D. ohm-meter
4 A heater coil rated at (1000 W - 200 V) is connected to 110 volt line. What will be the power consumed?
A. 200 W
B. 302.5
C. 250 W
D. 350 W
5 The powers of tow electric bulbs are 100 W and 200 W. Both of them are joined with 220 V mains. The ratio of resistances of their filaments will be
A. 1 : 2
B. 2 : 1
C. 1 : 4
D. 4 : 1
6 Coulomb's force between two point charges depends upon
A. Magnitude of charges
B. Distance between them
C. Medium in which they are located
D. All of the above
7 A 50 volt battery is connected across 10 ohm resistor. The current is 4.5 A. The internal resistance of the battery is
A. Zero
B. 0.5Ω
C. 1.1Ω
D. 5.0Ω
8 Potentiometer is more sensitive than voltmeter, because
A. Voltmeter has a very high resistance
B. Voltmeter has a very low resistance
C. Potentiometer does not draw any current from a source of unknown potential difference
D. Potentiometer is sensitive
9 The speed of randomly moving electrons depends upon
A. pressure
B. volume
C. temperature
D. mass
10 The nature of capacity of electrostatic capacitor depends on
A. Shape
B. Size
C. Thickness of plates
D. Area

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