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This mock test of Test: Inductance for Class 12 helps you for every Class 12 entrance exam.
This contains 10 Multiple Choice Questions for Class 12 Test: Inductance (mcq) to study with solutions a complete question bank.
The solved questions answers in this Test: Inductance quiz give you a good mix of easy questions and tough questions. Class 12
students definitely take this Test: Inductance exercise for a better result in the exam. You can find other Test: Inductance extra questions,
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QUESTION: 1

The unit of self inductance of a coil is

Solution:

Now, e=L(di/dt)

L=e/(di/dt)

1 henry=1 volt/(1 ampere/second)

QUESTION: 2

Coefficient of mutual induction is the ratio of

Solution:

QUESTION: 3

If a capacitor of capacitance 9.2F has a voltage of 22.5V across it. Calculate the energy of the capacitor.

Solution:

E = CV^{2}/2

= 9.2 x (22.5)^{2}/2

= 2328.75 J

QUESTION: 4

A solenoid coil has 10 turns per cm along its length and a cross sectional area of 10 cm^{2}. 100 turns of another wire are wound round the first solenoid coaxially. The two coils are electrically insulated from each other. The mutual inductance between the two coils is

Solution:

n_{1}=10 turns per cm, =1000 turns per metre

n_{2}l=100, A=10 c=0.1 m^{2}, M=μ_{0}n_{1}(n_{2}l) A

=4πx10^{-7}×1000×100×0.1H=0.13mh

QUESTION: 5

If we take the analogy between mechanical motion and electric circuits, then inductance is analogous to

Solution:

QUESTION: 6

Two pure inductors are connected in series, if their self inductance is L. Find the total inductance

Solution:

QUESTION: 7

Suppose there are two coils of length 1m with 100 and 200 turns and area of cross section of 5 x 10^{-3} m^{2}. Find the mutual inductance.

Solution:

QUESTION: 8

If the current in primary coil changes from 5 A to 2 A in 0.03 sec and the induced e.m.f. is 1000 volts, find the mutual induction

Solution:

As φ =mi

now take change in flux

dφ/dt=d(mi)/dt

we can write it as

dφ/ dt= m Δi/Δt

-e=m(2-5)/0.03

e=3m/0.03

1000=300m/3

m=10

QUESTION: 9

The mutual induction does not depend on which of the following factors

Solution:

QUESTION: 10

Inductance is a _______ quantity. Its dimension is ________.

Solution:

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