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Two alternating voltage generators produce emfs of
P the same amplitude \( \mathrm{E}_{0} \) but with a phase difference

W of \( \pi / 3 \). The resultant emf is
(1) \( E_{0} \sin [\omega t+(\pi / 3)] \)
(2) \( E_{0} \sin [\omega t+(\pi / 6)] \)
(3) \( \sqrt{3} \mathrm{E}_{0} \sin [\omega t+(\pi / 6)] \)
(4) \( \sqrt{3} \mathrm{E}_{0} \sin [\omega t+(\pi / 2)] \)
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