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Standard XII
Physics
Alternating Current Applied to an Inductor
A solenoid ha...
Question
A solenoid having cross section area 4cm^2 half air and half iron(relative permeability of 500) is 22cm long. If a number of turns in it is 10^3 then its self inductance is
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Q.
The self-inductance of an air core solenoid of 100 turns is
1
m
H
. The self-inductance of another Solenoid of 50 turns (with the same length and cross-sectional area) with a core having relative permeability 500 is
Q.
A solenoid having a core of
10
−
3
m
2
in cross-section, half air (
μ
r
=
1
) and half iron (
μ
r
=
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. What is coefficient of self induction?
Q.
An air core solenoid has 1000 turns and is one metre long. Its cross-sectional area is
10
c
m
2
. Its self inductance is
Q.
A solenoid (air core) ahs 400 turns, is 20 cm long and has a cross section of
4
c
m
2
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Q.
Derive expression for self inductance of a long air-cored solenoid of length L, cross- sectional area A and having number of turns N.
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