If the number of turns per unit length of a coil of solenoid is doubled, the self-inductance of the solenoid will

(a)    remain unchanged

(b)    be halved

(c)    be doubled

(d)    become four times

Question

If the number of turns per unit length of a coil of solenoid is doubled, the self-inductance of the solenoid will (a) remain unchanged (b) be halved (c) be doubled (d) become four times

Hrishant Goswami · Answer

(d) Self inductance of a solenoid =(&micro;An^2)/l So, self induction proportional to n 2 So, inductance becomes 4 times when n is doubled.

vedha prabhu · Answer

MAKE ALL THE PARAMETERS CONSTANT AS 1ASSUME THAT L IS DIRECTLY PROPORTIONAL TO N^2 i.e L =N^2 IF N=4 THEN L=4^2 = 16(x) IF2N=2x4=8 THEN L= 8^2 =64(4x) IF N IS DOUBLED THEN L WILL BE QUAD

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If the number of turns per unit length of a coil of solenoid is doubled, the self-inductance of the solenoid will (a) remain unchanged (b) be halved (c) be doubled (d) become four times

If the number of turns per unit length of a coil of solenoid is doubled, the self-inductance of the solenoid will

(a)    remain unchanged

(b)    be halved

(c)    be doubled

(d)    become four times

2 Answers

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