1
KCET 2019
MCQ (Single Correct Answer)
+1
-0

The frequency of an alternating current is $$50 \mathrm{~Hz}$$. What is the minimum time taken by current to reach its peak value from rms value?

A
$$5 \times 10^{-3} \mathrm{~s}$$
B
$$2.5 \times 10^{-3} \mathrm{~s}$$
C
$$0.02 \mathrm{~s}$$
D
$$10 \times 10^{-3} \mathrm{~s}$$
2
KCET 2019
MCQ (Single Correct Answer)
+1
-0

An inductor of inductance $$L$$ and resistor $$R$$ are joined together in series and connected by a source of frequency $$\omega$$. The power dissipated in the circuit is

A
$$\frac{R^2+\omega^2 L^2}{V}$$
B
$$\frac{V^2 R}{R^2+\omega^2 L^2}$$
C
$$\frac{V}{R^2+\omega^2 L^2}$$
D
$$\frac{V^2 R}{\sqrt{R^2+\omega^2 L^2}}$$
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