Question

Based on the diagram, why does the lightbulb light when the loop rotates, and what is the energy change involved?

Answer 1

A.
When the wire moves in an electric field, electrons in the wire move and become mechanical energy. The mechanical energy causes the light to glow. Mechanical energy used to rotate the loop is converted to electrical energy.

B.
When the wire moves in an electric field, electrons in the wire move and become mechanical energy. The mechanical energy causes the light to glow. Electrical energy used to rotate the loop is converted to light energy.

C.
When the wire moves in a magnetic field, electrons in the wire move and become an electric current. The current causes the light to glow. Mechanical energy used to rotate the loop is converted to electrical energy.

D.
When the wire moves in a magnetic field, electrons in the wire move and become an electric current. The current causes the light to glow. Mechanical energy used to rotate the loop is converted to light energy.

Answer 2

http://static.k12.com/calms_media/media/1363000_1363500/1363160/1/8c878cd6e7d42e94652234d2491a64120acb9c97/MS_PHYS_SCI_287190.jpg

Answer 3

@AlexandervonHumboldt2

Answer 4

@bibby

Answer 5

@CallMeKiki

Answer 6

@Donblue22

Answer 7

@EclipsedStar

Answer 8

a wire in a changing b field creates induces a voltage

Answer 9

magnet