In a series circuit with R = 10 Ω, L = 20 mH, current is i(t) = 2 sin 500t. Let ν(t) be the total voltage across this combination, then

1
i lags ν by 45°
2
i leads ν by 90°
3
i leads ν by 45°
4
i lags ν by 90°

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