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
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Answer:
Current (I) = 18A
Magnetic Field (B) = 23 mT
Length of Solenoid (l) = 1.3m
Diameter of Solenoid (d) = 2.6cm
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