If the magnetic flux changes rapidly, what happens to the induced voltage?

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Multiple Choice

If the magnetic flux changes rapidly, what happens to the induced voltage?

When magnetic flux through a conductor changes, the induced voltage builds up in proportion to how fast that change happens. According to Faraday’s law, emf = -N dΦ/dt, the magnitude of the induced voltage rises as the rate of change of flux increases. The negative sign indicates the induced voltage acts to oppose the change in flux (Lenz’s law). The circuit’s resistance doesn’t determine the induced voltage itself; it only affects the current that results from that voltage via I = emf/R. So a rapid flux change leads to a larger induced voltage, rather than a decrease or a constant value.

When magnetic flux through a conductor changes, the induced voltage builds up in proportion to how fast that change happens. According to Faraday’s law, emf = -N dΦ/dt, the magnitude of the induced voltage rises as the rate of change of flux increases. The negative sign indicates the induced voltage acts to oppose the change in flux (Lenz’s law). The circuit’s resistance doesn’t determine the induced voltage itself; it only affects the current that results from that voltage via I = emf/R. So a rapid flux change leads to a larger induced voltage, rather than a decrease or a constant value.

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