Question

To apply the Biot–Savart law to a wire XY carrying current I, the wire is broken into extremely small pieces called:

Options

• current elements

• magnetic domains

• field lines

• equipotential segments

Answer 1

Instead of treating the whole wire at once, it is broken into extremely small pieces called current elements, each of length dl. The magnetic field contribution dB from each element is then computed and integrated over the whole circuit.