ECAT Pre General Science Physics Chapter 13 MCQ Test With Answer

MCQ's Test For ECAT Pre General Science Physics Chapter 13 Current Electricity

Try The MCQ's Test For ECAT Pre General Science Physics Chapter 13 Current Electricity

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ECAT Pre General Science Physics Chapter 13 Current Electricity

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Question # 1

The rate at which the free electrons pass through any section of a metallic wire from right to left is:

Question # 2

The current that flows through the coil of a motor causes

Question # 3

An inkjet printer uses in its operation:

Question # 4

Conversion of chemical energy to electrical energy can be achieved by:

Question # 5

An important part of inkjet printer is:

Question # 6

The best conductor is:

Question # 7

The strength of magnetic field at certain points around a wire depends upon:

Question # 8

In gases, the charge carriers are:

Question # 9

Two dissimilar metals joined at their ends kept at constant temperature constitute:

Question # 10

The surface destiny of charge is defined is:

Question # 11

When resistance of a current carrying wire increases due to rise in temperature, the drift velocity of electrons:

Question # 12

In case of two identical charges placed certain distance apart, the electric field lines are:

Question # 13

When a constant potential difference is applied across the conductor, the drift velocity of electrons:

Question # 14

Another mean of electric potential energy per unit charge is given by:

Question # 15

The positive charge moving in one direction is equivalent in all external affects to a:

Question # 16

Electric flux is:

Question # 17

The rate at which the free electrons pass through any section of a metallic wire from right to left is:

Question # 18

SI unit of current describes the flow of charge at the rate of

Question # 19

Which of the following substances has got positive temperature coefficient of resistance?

Question # 20

The electric flux through any surface depends upon:

Question # 21

Most practical applications of electricity involve

Question # 22

The effects of bends in a wire on its electrical resistance are:

Question # 23

The passage of current is accompanied by a magnetic field in the surrounding space:

Question # 24

The emf is measured in:

Question # 25

The obvious effect/s of current is/are:

Question # 26

An eV is unit of:

Question # 27

An important part of photocopier is:

Question # 28

As the current flows through the wire

Question # 29

When two spherical conducting balls at different potentials are joined by metallic wire, the current starts:

Question # 30

When certain area A is held parallel to the field lines, then:

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ECAT Physics Chapter 13 Important MCQ's

Sr.# Question Answer
1

The obvious effect/s of current is/are:
A.

Heating effect

B.

Magnetic effect

C.

Chemical effect

D.

Both (C) and (B)
2 The free electrons in metals:
A.

Are in random motion and their speed depends upon temperature

B.

Move in particular direction

C.

Move with speed of light

D.

Move such that their speed does not depend on their temperature
3 The value of resistivity is the least for:
A. Copper
B. Aluminimum
C. Silver
D. Tungsten
4 Electric field lines emerge from the charge in:
A.

One dimension

B.

Two dimensions

C.

Three dimensions

D.

Four dimensions
5 The number of field lines passing through unit area held perpendicular to the field lines represent:
A.

Flux in that region

B.

Intensity of the field

C.

Charge

D.

Area of the region
6

In case of metallic conductors, the change carries are:
A.

Protons

B.

Electrons

C.

Antiprotons

D.

Positrons
7

Electrostatics is the branch of physics which deals with the study of electro charges:
A.

At rest

B.

At rest under the action of electric forces

C.

In motion under the action of electric forces

D.

In motion
8

The example/s of non-electrical energy to electrical is/are:
A.

Chemical energy

B.

Mechanical energy

C.

Heat energy

D.

Both (A) and (B)
9 Xerography means:
A.

Dry writing

B. Wet writing

C.

Poor writing

D.

Excellent writing
10 The interior of a hollow charged metal sphere is a region which:
A.

Contain some magnitude of electric field

B.

Is full of electric field lines

C.

Is field-free region

D.

Either (A) or (B)

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