Question

How does an induction cooktop use mutual inductance?

Options

• Loosely coupled coils charge a phone without physical contact.

• A constant current in the cookware removes magnetic flux linkage.

• Changing the current in the cooktop coil induces current in the cookware.

• Tightly coupled coils step up or step down voltage.

Answer 1

A changing current in the cooktop coil produces changing magnetic flux. That changing flux induces current in the cookware.