Question

The magnetic field due to a current element is minimum in a plane passing through the element when it is perpendicular to its axis. State true or false.

(a) True

(b) False

I have been asked this question in final exam.

I want to ask this question from Magnetic Field due to a Current Element & Biot-Savart Law topic in section Moving Charges and Magnetism of Physics – Class 12

Answer 1

Right choice is (b) False

Explanation: If θ = 90^o → sin θ = 1

→ Then dB is maximum.

The magnetic field due to a current element is maximum in a plane passing through the element and perpendicular to its axis.