A wire of fixed length and fixed resistance is connected to an ideal constant-voltage source. It is first shaped into one circular turn and then reshaped into N identical circular turns. Neglect changes in resistance caused by bending. By what factor does the centre magnetic field change?
Physics · Magnetic effect of current · biot savart law and magnetic field due to straight conductor ,arc and ring
A wire of fixed length and fixed resistance is connected to an ideal constant-voltage source. It is first shaped into one circular turn and then reshaped into N identical circular turns. Neglect changes in resistance caused by bending. By what factor does the centre magnetic field change?
Options