ECAT Pre Engineering Physics Chapter 13 MCQ Test With Answer

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

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

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Physics ECAT Pre Engineering Chapter 13 Current Electricity

00:00
Question # 1

A current of 1 ampere is passing through a conductor. The charge passing through it in half a minute s

Question # 2

The earth’s potential and potential at infinity are taken:

Question # 3

Flux through a closed surface of any shape and flux through the surface of a sphere drawn around a charge are:

Question # 4

Field lines are closer to each other in the region where the field is:

Question # 5

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

Question # 6

Magnetic effect of current is used:

Question # 7

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

Question # 8

Thermistors are prepared under

Question # 9

In case of metallic conductors, the charge carriers are

Question # 10

An important part of photocopier is:

Question # 11

The electric flux through any surface depends upon:

Question # 12

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

Question # 13

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

Question # 14

The value of resistivity is the least for:

Question # 15

In a metal, the valence electrons are:

Question # 16

The conventional current is the name given to current due to flow of:

Question # 17

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

Question # 18

Most practical application of electricity involve

Question # 19

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

Question # 20

If the ends of a wire are connected to a battery an electric field E will be set up at:

Question # 21

The best conductor is:

Question # 22

Which instrument is expensive and difficult to use?

Question # 23

When two spherical conducting balls at different potentials are joined by a metallic wire, after some time:

Question # 24

An example of photoconductor is:

Question # 25

An electric field is generated along the wire when:

Question # 26

The interior of a hollow charged metal sphere is a region which:

Question # 27

The device which can convert heat energy into electrical energy is called:

Question # 28

Static electricity is produced by the transfer of:

Question # 29

Electrolysis is the study of conduction of electricity through:

Question # 30

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

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ECAT Physics Chapter 13 Important MCQ's

Sr.# Question Answer
1 When resistance of a current carrying wire increases due to rise in temperature, the drift velocity of electrons:
A.

Decreases

B.

Increases

C.

Remains the constant

D.

Either of these
2

Certain charge +q is placed at the center of a sphere. At each of the sphere,The directions of electric intensity and vector area are:
A.

Same

B.

Different

C.

Opposite to each other

D.

At 60º with each other
3 The term drift velocity is used when the ends of a wire are:
A.

Connected to a laser source

B.

Connected to a voltage source

C.

Not connected to a voltage source

D.

At different values of potential
4 Electric field lines emerge from the charge in:
A.

One dimension

B.

Two dimensions

C.

Three dimensions

D.

Four dimensions
5 Xerography means:
A.

Dry writing

B. Wet writing

C.

Poor writing

D.

Excellent writing
6 Aluminum is a:
A.

Good insulator

B.

Bad conductor

C.

Both (A) and (B)

D.

Excellent conductor
7 The quantity having the same unit as that of emf is:
A. Force
B. Energy
C. Potential
D. Current
8

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

Greater than the speed at which they pass from left to right

B.

Less than the speed at which they pass from left to right

C.

The same speed at which they pass from left to right

D.

Any of above
9 An eV is unit of:
A.

Potential

B.

Energy

C.

Work

D.

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

No lines cross this area

B.

Maximum lines pass through this area

C.

The number of lines are between zero and maximum

D.

Both (A) and (B) correct

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