Question

Q1: A solenoid l=1.3m long 2.6cm in diameter carries a current of 18 A. The magnetic field inside the solenoid is 23mT. Find the length of the wire L forming the solenoid. (5)
Hint: N=nl which gives n=N/l

Answer 1

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Answer 2

Answer:

Current (I) = 18A

Magnetic Field (B) = 23 mT

Length of Solenoid (l) = 1.3m

Diameter of Solenoid (d) = 2.6cm