Question

The emf that appears in a Faraday's law is:

• A. Around a conducting circuit
• B. around the boundary of the surface used to compute the magnetic flux
• C. through the surface used to compute the magnetic flux
• D. perpendicular to the surface used to compute the magnetic flux

Answer 1

The correct option is B

around the boundary of the surface used to compute the magnetic flux

Step 1: Explanation of the correct option

• Faraday's law: It states that. “When the magnetic flux of the magnetic field changes with time, the electromotive force(emf) is produced”.
• The emf that appears in Faraday's law is around the boundary of the surface and is used to compute the magnetic flux in that field of region.

Step 2: Final answer

Hence, the emf that appears in Faraday's law around the boundary of the surface is used to compute the magnetic flux. Thus option(b) is correct.