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The device in which one circuit controls another, especially if the current in the second...

Physics
JAMB 2015
The device in which one circuit controls another, especially if the current in the second circuit is large or dangerous is known as
  • A. Electromagnetic devices
  • B. Magnetic relay device
  • C. None at all
  • D. Sextant
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Correct Answer: Option B
Explanation
Magnetic relay device :is the device that controls a circuit (i.e one circuit )if a current in the second circuit is large or dangerous

There is an explanation video available below.

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