ECAT Pre Engineering Physics Chapter 12 MCQ Test With Answer

MCQ's Test For Physics ECAT Pre Engineering Chapter 12 Electrostatics

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

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Physics ECAT Pre Engineering Chapter 12 Electrostatics

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Question # 1

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

Question # 2

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

Question # 3

Coulomb force, when any material medium is placed between two charges

Question # 4

Magnetic effect at a point caused due to flow a current depend upon the

Question # 5

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

Question # 6

One joule is equal to

Question # 7

The electric field will be uniform

Question # 8

Three resistors of resistance 2,3 and 6 ohms are connected in parallel, their equivalent resistance is

Question # 9

The energy stored in a charge capacitor

Question # 10

Physicist George Simon ohm was a

Question # 11

The unit of intensity of electric field is

Question # 12

An alpha particle is accelerated through a potential difference of 106volt. Its kinetic energy will be

Question # 13

Electric flux is defined by the relation

Question # 14

Battery is charged in motor cars, which is based on

Question # 15

One coulomb per second is equal to

Question # 16

One electron volt is equal to

Question # 17

The colour sequence in a carbon resistor in red, brown, orange and silver. The resistance of the resistor is

Question # 18

The unit of resistivity is

Question # 19

Some charge is being given to a conductor. Then its potential

Question # 20

At ordinary temperature, an increase in temperature increases the conductivity of

Question # 21

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

Question # 22

Surface density of charge is defined as

Question # 23

If we increase the distance between two plates of the capacitor, the capacitance will

Question # 24

A sheet of aluminium foil of negligible thickness is introduced between the plates of a capacitor. The capacitance of the capacitor

Question # 25

A heater coil rated at (1000 W - 200 V) is connected to 110 volt line. What will be the power consumed?

Question # 26

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

Question # 27

A point charge Q is placed at the mid-point of a line joining two charges. 4q and q. if the net force on charge q is zero. then Q must be equal to

Question # 28

When a dielectric material is introduced between the plates of a charged condenser the electric field between the plates

Question # 29

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 # 30

A closed surface contains two equal and opposite charges. The net electric flux from the surface will be

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ECAT Physics Chapter 12 Important MCQ's

Sr.# Question Answer
1 The unit of resistivity is
A. ohm
B. ohm-m2
C. ohm-meter
D. ohm-m-1
2 Electric flux is defined by the relation
A. E.A.
B. E x A
C. E/A
D. none of these
3 A certain charge liberates 0.8 g of oxygen. The same charge will liberate. how many g of silver?
A. 108 g
B. 10.8 g
C. 0.8 g
D. 108/0.8 g
4 The current through a metallic conductor is due to the motion of
A. protons
B. neutrons
C. electrons
D. free electrons
5 Electron volt is the unit of.
A. Potential difference
B. Energy
C. Resistance
D. Capacitance
6 A one microfarad capacitor of a TV is subjected to 4000 V potential difference. The energy stored in capacitor is
A. 8 J
B. 16 J
C. 4 x 10-3J
D. 2 x 10-3J
7 Three resistance 500,500 and 50 ohms are connected in series across 555 volts mains. The current flowing through them will be
A. 0.52 A
B. 1 mA
C. 0.7 mA
D. 1.4 A
8 What is the current is a 2 x 106ohm resistor having a potential difference of 2 x 103volts?
A. 10-1A
B. 10-2A
C. 10-4A
D. 1 mA
9 A wire is bent into a ring of radius R is given a charge q. The magnitude of the electrical field at the centre of the ring is
A. Two
B. 1/2
C. Zero
D. 3/2
10 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

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