Question

Which of the following is used to determine the direction of magnetic field in a current carrying conductor?

(a) Left hand thumb rule

(b) Right hand thumb rule

(c) Right hand palm rule

(d) Left hand palm rule

This question was posed to me in class test.

My enquiry is from Direction of Magnetic Field in division Electromagnetism of Basic Electrical Engineering

Answer 1

The correct choice is (b) Right hand thumb rule

Easy explanation: The right hand thumb rule determines the direction of a magnetic field in a current carrying conductor. The rule states that when we align our right thumb in the direction of the current and curl our fingers around it, the direction of our fingers is the direction of the magnetic field.