1
AIIMS 2018
MCQ (Single Correct Answer)
+1
-0.33

In a series R-C circuit shown in figure, the applied voltage is 10 V and the voltage across capacitor is found to be 8V. Then, the voltage across R and the phase difference between current and the applied voltage will respectively be

AIIMS 2018 Physics - Alternating Current Question 1 English

A
$$6 \mathrm{~V}, \tan ^{-1}\left(\frac{4}{3}\right)$$
B
$$3 V, \tan ^{-1}\left(\frac{3}{4}\right)$$
C
$$6 \mathrm{~V}, \tan ^{-1}\left(\frac{5}{3}\right)$$
D
None of these
2
AIIMS 2018
MCQ (Single Correct Answer)
+1
-0.33

An ideal coil of $$10 \mathrm{~H}$$ is connected in series with a resistance of $$5 \Omega$$ and a battery of $$5 \mathrm{~V}$$. After $$2 \mathrm{~s}$$, after the connection is made, the current flowing (in ampere) in the circuit is

A
$$(1-e)$$
B
$$e$$
C
$$e^{-1}$$
D
$$\left(1-e^{-1}\right)$$
3
AIIMS 2018
MCQ (Single Correct Answer)
+1
-0.33

In a circuit $$L, C$$ and $$R$$ are connected in series with an alternating voltage source of frequency $$f$$. The current leads the voltage by $$45^{\circ}$$. The value of $$C$$ is

A
$$\frac{1}{2 \pi f(2 \pi f L+R)}$$
B
$$\frac{1}{\pi f(2 \pi f L+R)}$$
C
$$\frac{1}{2 \pi f(2 \pi f L-R)}$$
D
$$\frac{1}{\pi f(2 \pi f L-R)}$$
4
AIIMS 2017
MCQ (Single Correct Answer)
+1
-0.33

A series R-C circuit is connected to AC voltage source. Consider two cases; (A) When C is without a dielectric medium and (B) When C is filled with dielectric of constant 4. The current I$$_R$$ through the resistor and voltage V$$_C$$ across the capacitor are compared in two cases.

A
$$I_R^A> I_R^B$$
B
$$I_R^A< I_R^B$$
C
$$V_C^A< V_C^B$$
D
None of these
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