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Consider the Self-inductance per Unit Length of a Solenoid at Its Centre and that Near Its Ends. Which of the Two is Greater?

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प्रश्न

Consider the self-inductance per unit length of a solenoid at its centre and that near its ends. Which of the two is greater?

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उत्तर

Self-inductance per unit length of solenoid is given as,

`L/l=mu_0n^2A`

From the above equation we can see that, self inductance per unit length will depend on the permeability of free space `(mu_0),` number of turns per unit length (n) and area of the cross-section of the solenoid (A). All the above factors are constant at the centre and near any end of the solenoid therefore self inductance at both the points will be same.

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पाठ 38: Electromagnetic Induction - Short Answers [पृष्ठ ३०४]

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एचसी वर्मा Concepts of Physics Volume 1 and 2 [English]
पाठ 38 Electromagnetic Induction
Short Answers | Q 12 | पृष्ठ ३०४

संबंधित प्रश्‍न

Define self-inductance. Write its SI units.


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(Assume that, l = current passes through the turns, µ0 = Permeability of vacuum)


Calculate the self-inductance of a coil using the following data obtained when an AC source of frequency `(200/pi)` Hz and a DC source are applied across the coil.

AC Source
S.No. V (volts) I (A)
1 3.0 0.5
2 6.0 1.0
3 9.0 1.5
DC Source
S.No. V (volts) I (A)
1 4.0 1.0
2 6.0 1.5
3 8.0 2.0

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