A student understands that a hammer in an electric bell strikes the go

1.	A student understands that a hammer in an electric bell strikes the gong when the current passing through the circuit turns the coil into an electromagnet. He also observes that when a switch is held on, the hammer repeatedly strikes the gong .What causes the hammer to continue striking.
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A student understands that a hammer in an electric bell strikes the gong when the current passing through the circuit turns the coil into an electromagnet. He also observes that when a switch is held on, the hammer repeatedly strikes the gong .What causes the hammer to continue striking.

Answer»

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