# A solenoid of radius 2.7 cm has380 turns and a len...

(a) Find its inductance.

mH

(b) Find the rate at which current must change through it toproduce an emf of 70 mV.

A/s

mH

(b) Find the rate at which current must change through it toproduce an emf of 70 mV.

A/s

## Answers ( 2 )

^{-2}m_{0}= 4?*10^{-7}^{-3}V^{2}_{o}N^{2}A / l^{-3}V