Question

polarity of an electromagnet can be changed by​

Answer 1

Answer:

Note the polarity of the coil before you turn off the power. Find the two wires that are attached to the electromagnet and disconnect them, using pliers or a screwdriver. Reverse the positions of the wires. When you turn on the power, the poles of the electromagnet will be reversed.

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Answer 2

Explanation:

Note the polarity of the coil before you turn off the power. Find the two wires that are attached to the electromagnet and disconnect them, using pliers or a screwdriver. Reverse the positions of the wires. When you turn on the power, the poles of the electromagnet will be reversed.

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