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The electric mains in a house are marked...

The electric mains in a house are marked 220V-50Hz. Write down the equation for instantaneous voltage.

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`E_(v) = 200 V, v = 50 Hz E = ?`
`E_(0) = sqrt2 E_(v) = 1.414 xx 220 = 311 V`
`E = E_(0) sin omega t = 311 sin 2 pi xx 50 t`
`= 311 sin 100 pi t`
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PRADEEP-ELECTROMAGNETIC INDUCTION & ALTERNATING CURRENT-Exercise
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