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An ac current is represented as i = 5 2 + 10 cos ⎟ ⎠ ⎞ ⎜ ⎝ ⎛ π + π 6 t 650 Amp The r.m.s value of the current is

1. 10 Amp
2. 50 Amp
3. 100 Amp
4. 5 2 Amp

Correct answer: 10 Amp

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