Question

Explain sign convention for amperes law.

Answer 1

1. Amperes law follows the right-hand thumb rule
2. Curl your right-hand fingers in the direction of the integral
3. The thumb now will point in the positive direction of current
4. If a number of currents pass through then $I_{NET}=I_1-I_2+I_3.$
5. This is the sign convention for amperes law.
6. The diagram below shows the sign convention followed in amperes law.