Question

Under what conditions might wires in a DC circuit emit electromagnetic waves?

a) Electromagnetic waves are emitted only in AC circuits.

b) Wires in a DC circuit emit waves when the current is varied.

c) Electromagnetic waves are never emitted by wires.

d) Wires emit waves when the voltage is varied.

Answer 1

Wires in a DC circuit emit electromagnetic waves when the current is varied.

Step-by-step explanation:

Under certain conditions, wires in a DC circuit can emit electromagnetic waves. Specifically, wires in a DC circuit emit waves when the current is varied. This means that if the magnitude of the current changes while still flowing in the same direction, electromagnetic waves will be emitted by the wires. For example, when the current is turned on or off, the wires will emit electromagnetic waves.