Question -
Answer -
Number of turns on the circularcoil, n = 20
Radius of the coil, r =10 cm = 0.1 m
Magnetic field strength, B =0.10 T
Current in the coil, I =5.0 A
(a) The totaltorque on the coil is zero because the field is uniform.
(b) The totalforce on the coil is zero because the field is uniform.
(c) Cross-sectionalarea of copper coil, A = 10−5 m2
Number of free electrons percubic meter in copper, N = 1029 /m3
Charge on the electron, e =1.6 × 10−19 C
Magnetic force, F = Bevd
Where, vd = Driftvelocity of electrons
Hence, the average force on each electron is 