Question

a) State Flemings Left Hand Rule. ()
b) Write 2 factors that affect the strength of magnetic field of a solenoid carrying current.​

Answer 1

magnetic needle placed in uniform

magnetic field has magnetic moment of

2 x 10-2 A m², and moment of inertia of

7.2 x 10-7 kg m². It performs 10 complete

oscillations in 6 s. What is the magnitude

of the magnetic field ?