Physics, 01.11.2019 01:31 oliviaciscooc

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a transformer can generate a magnetic field. which of the following choices correctly describes how a transformer is used to generate a magnetic field?

1. when the switch is open, current flows through the coil and induces a magnetic field.

2. when the switch is closed, current flows through the coil and induces a magnetic field.

3. when the switch is closed, a magnet is brought over to the coil to induce the magnetic field.

4. when the switch is open, a magnet is brought over to the coil to induce the magnetic field.

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