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

In a metal, the valence electrons are:

Question # 2

Gaussian surface is always:

Question # 3

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

Question # 4

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

Question # 5

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

Question # 6

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

Question # 7

An important part of photocopier is:

Question # 8

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

Question # 9

Aluminum is a:

Question # 10

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

Question # 11

In case of metallic conductors, the change carries are:

Question # 12

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

Question # 13

The charge carries in the electrolyte are:

Question # 14

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

Question # 15

An example of photoconductor is:

Question # 16

Electric flux is:

Question # 17

Electrostatics is the branch of physics which deals with the study of electro charges:

Question # 18

The charge carriers in an electrolyte are

Question # 19

In a metal, the valence electrons are:

Question # 20

The best conductor is:

Question # 21

An eV is unit of:

Question # 22

The third band of the colour code:

Question # 23

The obvious effect/s of current is/are:

Question # 24

Which instrument is expensive and difficult to use?

Question # 25

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

Question # 26

The inkjet printer ejects a thin stream of:

Question # 27

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

Question # 28

The fourth band is a:

Question # 29

The value of resistivity is the least for:

Question # 30

A field free region is found:

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ECAT Physics Chapter 13 Important MCQ's

Sr.# Question Answer
1 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
2 Xerography means:
A.

Dry writing

B. Wet writing

C.

Poor writing

D.

Excellent writing
3

Heating effect of current utilized in:
A.

Electric motor

B.

Electric toaster

C.

Electroplating

D.

Electric kettle
4 The interior of a hollow charged metal sphere is a region which:
A.

Contain some magnitude of electric field

B.

Is full of electric field lines

C.

Is field-free region

D.

Either (A) or (B)
5 In case of metallic conductors, the charge carriers are
A. Protons
B. Electrons
C. Antiprotons
D. Positrons
6 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
7 The quantity having the same unit as that of emf is:
A. Force
B. Energy
C. Potential
D. Current
8 A thermistor is a resistor which is:
A. Light Sensitive
B. Heat Sensitive
C. Sound Sensitive
D. All of these
9 A field free region is found:
A.

Near the outer surface of a hollow charged metal sphere

B.

In the interior of solid metal uncharged sphere

C.

In the interior of solid metal charged sphere

D.

Both (A) and (B)
10 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

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