Question

A tightly wound, long solenoid is kept with its axis parallel to a large metal sheet carrying a surface curr

Answer 1

Explanation:

Given, number of turns//length =n

(a) Since the net magnetic field = 0

∴

→

B

plate=

→

B

(so≤n)

Bplate×2l=μ0I=μ0ku

Bplate=

μ0k

2

WeknowB_(solenoid) = mu_(0)ni From (1) and(2) we get

i=

k

2n

(b) from question,

Ba=μ0kandBc=μ0k

∴B=

√

(μ0k)2+(μ0k)

2

=

√

2

μ0k.

Hope it helps!!!!!