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Force on a Straight Current Carrying Conductor Placed in a Magnetic Field

21.A solenoid...

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21.A solenoid having a core of cross section 4 cm square half air and half iron (relative permeability is equal to 500) is 22 cm long if the number of turns on it is 10 power 3 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} = 500

1 m

long, the no. of turns are

2000

. 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

30 c m

long is made by winding

2000

loops of wire on an iron rod whose cross-section is

1.5 {c m}^{2}

. If the relative permeability of the iron is

6000

. What is the self-inductance of the solenoid?

Q. A solenoid (air core) ahs 400 turns, is 20 cm long and has a cross section of

4 c m^{2}

. Then the coefficient of self induction is approximately

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