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MHT CET Physics question

PhysicsAlternating CurrentMHT CET

an ideal transformer has 100 turns in the primary and 250 turns in the secondary the peak value of the ac is 28V the r.m.s secondary voltage is nearest to

Answer: (A)

Solution

Peak secondary voltage V, so $ = 70/Missing argument for \sqrt\sqrt2 ≈ 49.5 ≈

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Question ID VK-081612