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

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Question # 1

The obvious effect/s of current is/are:

Question # 2

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

Question # 3

The term drift velocity is used when the ends of a wire are:

Question # 4

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

Question # 5

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:

Question # 6

The number of field lines passing through unit area held perpendicular to the field lines represent:

Question # 7

The magnitude of chemical Effects depends upon:

Question # 8

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

Question # 9

An example of photoconductor is:

Question # 10

An important part of photocopier is:

Question # 11

A thermistor is a resistor which is:

Question # 12

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

Question # 13

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

Question # 14

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

Question # 15

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

Question # 16

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

Question # 17

While finding the electric intensity at a point between two oppositely charged parallel plates, the Gaussian surface is taken in the form of a hollow:

Question # 18

Tick the correct statement:

Question # 19

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

Question # 20

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

Question # 21

Magnetic effect of current is used:

Question # 22

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

Question # 23

An electric field is generated along the wire when:

Question # 24

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

Question # 25

An ideal voltmeter has:

Question # 26

The current that flows through the coil of a motor causes:

Question # 27

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

Question # 28

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

Question # 29

The flux through a closed surface depends upon:

Question # 30

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

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ECAT Physics Chapter 13 Important MCQ's

Sr.# Question Answer
1 A rheostat can e used:
A. As variable resistor
B. As potential divider
C. For varying the current
D. All of these
2 In a metal, the valence electrons are:
A.

Attach to individual atoms

B.

Not attached to individual atoms

C.

Free to move within the metal

D.

Both (A) and (C)
3

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

Zero

B.

Much larger

C.

Larger

D.

Smaller
4

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)
5 The quantity having the same unit as that of emf is:
A. Force
B. Energy
C. Potential
D. Current
6 Which instrument is expensive and difficult to use?
A. Voltmeter
B. Potentiometer
C. CRO
D. Both A and C
7 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
8

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

Decreasing from zero to maximum

B.

Increasing from zero to maximum

C.

Decreasing from maximum to zero

D.

Increasing from maximum to zero
9

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

Protons

B.

Electrons

C.

Antiprotons

D.

Positrons
10 In gases, the charge carries are:
A.

Electrons

B.

Positive ions

C.

Negative ions

D.

Both (A) and (C)

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