Question

A solenoid has 100 turns per cm and a total resistance of 60 Ω center of the solenoid when it is connected to a 12 volt battery Determine the magnetic field in the 21 A flat c

Answer 1

2.5 x 10^-3 T

Step-by-step explanation:

n = 100 turns / cm = 10000 turns / m, R = 60 ohm, V = 12 V

i = V / R = 12 / 60 = 0.2 A

Magnetic field due to solenoid is

B = μ0 x n x i

B = 4 x 3.14 x 10^-7 x 10000 x 0.2

B = 2.5 x 10^-3 T