Help me pls. will give brainliest

Physics

1 answer:

Fofino [41]2 years ago

4 0

Answer:

B: Relay

Explanation:

Out of all the options, the only device that relies upon the magnetic field of an electric current.

The principle relies upon the principle of electro magnetic attraction whereby when the circuit detects a faulty current, it makes the electromagnetic field to become energized which in turn produces the temporary magnetic field. This magnetic field then moves the relay armature which is used in opening or closing the connections.

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Convert 5.7 miles to km

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