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Physics · 2025 · 1 mark
Alternating CurrentRepresentation of AC Current and Voltage by Rotating Vectors — Phasors1 markApplymcq
CBSE 2025 · Region 7 · Set 1 · Q4
An alternating current is given by I = I_0 cos (100 π) t. The least time the current takes to decrease from its maximum value to zero will be:
An alternating current is given by $\displaystyle \mathrm{I}=\mathrm{I}_{0} \cos (100 \pi) \mathrm{t}$. The least time the current takes to decrease from its maximum value to zero will be :
Official answer
(A)
$\displaystyle \left(\frac{1}{200}\right) \mathrm{s}$
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