A long solenoid is formed by winding 70 turns cm - 1 . If 2 . 0 A current flows, then the magnetic field produced inside the solenoid is ______________. ( µ 0 = 4 π × 10 – 7 T m A – 1 )

Question

A long solenoid is formed by winding 70 turns cm - 1 . If 2 . 0 A current flows, then the magnetic field produced inside the solenoid is ______________. ( µ 0 = 4 π × 10 – 7 T m A – 1 ), 1232 × 10 – 4 T, 176 × 10 – 4 T, 352 × 10 – 4 T, 88 × 10 – 4 T

MARKS App · Accepted Answer

Magnetic field inside solenoid = μ o n i where n = Number of turns per unit length n = 7000 turns/m B solenoid = μ o n i = 4 π × 10 - 7 × 7000 × 2 = 8 × 22 7 × 10 - 6 × 7 × 100 = 176 × 10 - 4 T

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