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When a resistance R is connected in seri...

When a resistance R is connected in series with an element A, the electric current is found to be lagging behind the voltage by angle `theta_(1)`. When the same resistanceis connected in series with element B, current leads voltage by `theta_(2)`. When R, A, B are connected in series, the current now leads voltage by theta. Assume same AC source is used in all cases, then:

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