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| Lenz's Law |
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| The motion of the magnet in either direction causes a change in strength of the magnetic field linked with the coil and this causes a current to be induced in the coil. This induced current opposes the change in the magnetic field by producing its own magnetic field. |
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| Whenever an EMF is induced, the induced current is in such a direction so as to oppose the change inducing the current. |
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| The negative sign indicates the opposing nature of the induced EMF. |
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| The three methods of producing induced EMF are by: |
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| (i) Changing the magnitude of magnetic field B |
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| (ii) Changing the area A |
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Electromagnetic Induction
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