Electricity and Magnetism > Inductance DCS# 5J10.20

BACK EMF

back emf

APPARATUS
big inductor 202-bench
pair of copper paddles 202-bench
6 V battery 202-02-D1


DESCRIPTION
Place paddles in contact and then separate them quickly to produce a big spark.

NOTES

Clean copper paddles with steel wool before using.

Slow motion video:

spark