Q4.26Multiple choice
A uniform conducting wire of length 12a and resistance R is wound up as a current carrying coil in the shape of
- (i)an equilateral triangle of side a;
- (ii)a square of sides a and,
- (iii)a regular hexagon of sides a. The coil is connected to a voltage source V0. Find the magnetic moment of the coils in each case. Moving Charges and Magnetism