Question

Which of the following can produce a magnetic field?
(a) Electric charges at rest
(b) Electric charges in motion
(c) Only by permanent magnets
(d) Electric charges whether at rest or in motion

Answer 1

Answer:

only by permanent magnet

Answer 2

Answer:

b.Electric charges in motion

c.Only by permanent magnets

Explanation:

if you have to choose just one option choose option b.

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