Question

A solenoid has an induction magnet of 12 π x 10-7 T. If the length of...

A solenoid has an induction magnet of 12 π x 10-7 T. If the length of the solenoid
5 m, and the current flowing 1.5 A. Calculate the number of turns of the solenoid
and what is the induction of the solenoid magnet at the end of the solenoid?

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Homework Answers

Answer #1

Solution:

Length of solenoid = 5 m

Current flowing I = 1.5 A

Magnetic induction or magnetic flux density = B

we need to find the number of turns of the solenoid ?.

We know    

where N is the number of turns.

is the permeability of free space = 4π x 10-7

therefore

  

Number of turns N = 10

b) what is the induction of the solenoid magnet at the end of the solenoid?

The magnetic field at end of the solenoid is half of that at its middle

  

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