ECAT Pre Computer Science Chapter 13 MCQ Test With Answer

MCQ's Test For ECAT Physics Chapter 13 Current Electricity

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

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ECAT Physics Chapter 13 Current Electricity

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Question # 1

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

Question # 2

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

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

As the current flow through the wire:

Question # 5

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

Question # 6

An ideal voltmeter has:

Question # 7

Kirchhoff's first rule is also called:

Question # 8

In order to have a constant current through wire, the potential difference across its end should:

Question # 9

The current that flows through the coil of a motor causes

Question # 10

The charge carries in the electrolyte are:

Question # 11

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

Question # 12

In case of metallic conductors, the charge carriers are

Question # 13

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

Question # 14

A thermistor is a resistor which is:

Question # 15

An electric field is generated along the wire when:

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ECAT Physics Chapter 13 Important MCQ's

Sr.# Question Answer
1 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
2

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
3 The conventional current is the name given to current due to flow of:
A. Positrons
B.

Positive charges

C.

Negative charges

D.

Both (A) and (C)
4 Tick the correct statement:
A.

Both the potential and potential difference is scalars

B.

Potential is a scalar but potential difference is a vector

C. Both are vectors

D.

Potential is vector but potential difference is scalar
5 SI unit of current describes the flow of charge at the rate of
A. One ampere per second
B. One coulomb per second
C. One electron per second
D. 6.25 x 1018electrons per second
6

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

Zero

B.

Much larger

C.

Larger

D.

Smaller
7 In case of metallic conductors, the charge carriers are
A. Protons
B. Electrons
C. Antiprotons
D. Positrons
8 In a metal, the valence electrons are:
A. Attached to individual atoms
B. Not attached to individual atoms
C. Free to move within the metal
D. Both A and B
9 The positive charge moving in one direction is equivalent in all external affects to a:
A.

Negative charge is moving in the same direction

B.

Positive charge is moving in the opposite direction

C.

Negative charge moving in the opposite direction

D.

Positive charges moving in the same direction
10 The passage of current is accompanied by a magnetic field in the surrounding space:
A.

Always accompanied

B.

Sometimes accompanied

C.

Never accompanied

D. Any of above

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