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

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

Question # 2

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

Question # 3

The surface destiny of charge is defined is:

Question # 4

The value of resistivity is the least for:

Question # 5

The quantity having the same unit as that of emf is:

Question # 6

In gases, the charge carries are:

Question # 7

Static electricity is produced by the transfer of:

Question # 8

Aluminum is a:

Question # 9

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

Question # 10

Electric flux is:

Question # 11

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

Question # 12

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

Question # 13

In a metal, the valence electrons are:

Question # 14

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

Question # 15

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

Question # 16

The obvious effect/s of current is/are:

Question # 17

In gases, the charge carriers are:

Question # 18

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

Question # 19

The value of relative permittivity of different dielectrics are:

Question # 20

The emf is measured in:

Question # 21

Heating effect of current utilized in:

Question # 22

The best conductor is:

Question # 23

Gaussian surface is always:

Question # 24

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

Question # 25

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

Question # 26

Electric field lines emerge from the charge in:

Question # 27

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

Question # 28

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

Question # 29

The third band of the colour code:

Question # 30

The fourth band is a:

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ECAT Physics Chapter 13 Important MCQ's

Sr.# Question Answer
1 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
2 A current of 1 ampere is passing through a conductor. The charge passing through it in half a minute s
A. One coulomb
B. 0.5 coulomb
C. 30 coulombs
D. 2 coulombs
3 Most practical application of electricity involve
A.

Charges at the rest

B.

Charges in the motion

C.

Electrons at rest

D.

Atoms in motion
4 Which of the following substances has got positive temperature coefficient of resistance?
A. Carbon
B. Germanium
C. Silicon
D. Aluminium
5

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

Zero

B.

Much larger

C.

Larger

D.

Smaller
6 A rheostat can e used:
A. As variable resistor
B. As potential divider
C. For varying the current
D. All of these
7

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
8

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

Primary cell

B.

Secondary cell

C.

Both (A) and (B)

D.

Photovoltaic cell
9

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
10

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

Straight lines

B.

Sine curves

C.

Curved

D.

Both (A) and (B)

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