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

The electric flux through any surface depends upon:

Question # 2

In case of metallic conductors, the charge carriers are

Question # 3

Electric flux is:

Question # 4

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 # 5

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

Question # 6

Selenium is:

Question # 7

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 # 8

Heating effect of current utilized in:

Question # 9

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

Question # 10

Kirchhoff's first rule is also called:

Question # 11

An important part of inkjet printer is:

Question # 12

Gaussian surface is always:

Question # 13

The best conductor is:

Question # 14

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

Question # 15

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

Question # 16

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

Question # 17

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

Question # 18

An electric field is generated along the wire when:

Question # 19

Which instrument is expensive and difficult to use?

Question # 20

The value of resistivity is the least for:

Question # 21

In gases, the charge carries are:

Question # 22

In a metal, the valence electrons are:

Question # 23

The value of relative permittivity of different dielectrics are:

Question # 24

In case of metallic conductors, the change carries are:

Question # 25

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

Question # 26

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

Question # 27

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

Question # 28

An important part of photocopier is:

Question # 29

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

Question # 30

Magnetic effect of current is used:

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ECAT Physics Chapter 13 Important MCQ's

Sr.# Question Answer
1 The value of relative permittivity of different dielectrics are:
A.

Equal

B.

Different

C.

Greater than one

D.

Smaller than one
2

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
3 The best conductor is:
A. Silver
B. Copper
C. Aluminimum
D. Both B and C
4 An ideal voltmeter has:
A. Zero resistance
B. Small resistance
C. Large resistance
D. Infinite resistance
5 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
6 If the ends of a wire are connected to a battery an electric field E will be set up at:
A.

The ends of the wire only

B.

Mid points of the wire only

C.

Every point within the wire

D.

At nodes only
7

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
8 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
9

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

Its shaft to revolve

B.

Its brushes to rotate

C.

Motor to move

D.

Its shafts to rotate
10

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

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