The diagram shows a magnet being moved into a coil of wire. The reading on the voltmeter increases to +3 as the magnet moves into the wire. What has been induced in the coil of wire? Give the full name, not an abbreviation.
Question
The diagram shows a magnet being moved into a coil of wire. The reading on the voltmeter increases to +3 as the magnet moves into the wire. What has been induced in the coil of wire? Give the full name, not an abbreviation.
Solution
When a magnet is moved into a coil of wire and the reading on the voltmeter increases, it indicates that an electromotive force (EMF) has been induced in the coil of wire. This is due to Faraday's law of electromagnetic induction, which states that a change in the magnetic field within a closed loop of wire induces an electromotive force in the wire. This induced EMF causes a current to flow if the circuit is closed. So, in this case, an electromotive force has been induced in the coil of wire.
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