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

Most practical applications of electricity involve

Question # 2

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

Question # 3

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

Question # 4

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

Question # 5

Heating effect of current utilized in:

Question # 6

The free electrons in metals:

Question # 7

The current that flows through the coil of a motor causes

Question # 8

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

Question # 9

The obvious effect/s of current is/are:

Question # 10

A thermistor is a resistor which is:

Question # 11

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

Question # 12

Selenium is:

Question # 13

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

Question # 14

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

Question # 15

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 # 16

Electrolysis is the study of conduction of electricity through:

Question # 17

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

Question # 18

Gaussian surface is always:

Question # 19

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

Question # 20

The inkjet printer ejects a thin stream of:

Question # 21

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

Question # 22

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

Question # 23

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

Question # 24

An eV is unit of:

Question # 25

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

Question # 26

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

Question # 27

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

Question # 28

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

Question # 29

The electric flux through any surface depends upon:

Question # 30

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

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ECAT Physics Chapter 13 Important MCQ's

Sr.# Question Answer
1 In gases, the charge carriers are:
A. Electrons
B. Positive ions
C. Negative ions
D. Both A and C
2 Xerography means:
A.

Dry writing

B. Wet writing

C.

Poor writing

D.

Excellent writing
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

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

Both the conductors are at the same potential

B.

Potential difference across the conductors remain constant

C.

Potential difference across the conductors becomes zero

D.

Both (A) and (B)
5 When a constant potential difference is applied across the conductor, the drift velocity of electrons:
A.

Increases

B.

Decreases

C.

Remains the constant

D.

Either of these
6

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:
A.

Circle

B.

Rectangle

C.

Sphere

D.

Box
7 In case of metallic conductors, the charge carriers are
A. Protons
B. Electrons
C. Antiprotons
D. Positrons
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 Aluminum is a:
A.

Good insulator

B.

Bad conductor

C.

Both (A) and (B)

D.

Excellent conductor
10 A rheostat can e used:
A. As variable resistor
B. As potential divider
C. For varying the current
D. All of these

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