AIEEE 2010 | Alternating Current Question 96 | Physics

AIEEE 2010

MCQ (Single Correct Answer)

-1

In the circuit shown below, the key $$K$$ is closed at $$t=0.$$ The current through the battery is AIEEE 2010 Physics - Alternating Current Question 95 English

AIEEE 2010 Physics - Alternating Current Question 95 English

$${{V{R_1}{R_2}} \over {\sqrt {R_1^2 + R_2^2} }}$$ at $$t=0$$ and $${V \over {{R_2}}}$$ at $$t = \infty $$

$${V \over {{R_2}}}$$ at $$\,t = 0$$ and $${{V\left( {{R_1} + {R_2}} \right)} \over {{R_1}{R_2}}}$$ at $$t = \infty $$

$${V \over {{R_2}}}$$ at $$\,t = 0$$ and $${{V{R_1}{R_2}} \over {\sqrt {R_1^2 + R_2^2} }}$$ at $$t = \infty $$

$${{V\left( {{R_1} + {R_2}} \right)} \over {{R_1}{R_2}}}$$ at $$t=0$$ and $${V \over {{R_2}}}$$ at $$t = \infty $$

AIEEE 2007

MCQ (Single Correct Answer)

-1

In an $$a.c.$$ circuit the voltage applied is $$E = {E_0}\,\sin \,\omega t.$$ The resulting current in the circuit is $$I = {I_0}\sin \left( {\omega t - {\pi \over 2}} \right).$$ The power consumption in the circuit is given by

$$P = \sqrt 2 {E_0}{I_0}$$

$$P = {{{E_0}{I_0}} \over {\sqrt 2 }}$$

$$P=zero$$

$$P = {{{E_0}{I_0}} \over 2}$$

AIEEE 2006

MCQ (Single Correct Answer)

-1

In a series resonant $$LCR$$ circuit, the voltage across $$R$$ is $$100$$ volts and $$R = 1\,k\Omega $$ with $$C = 2\mu F.$$ The resonant frequency $$\omega $$ is $$200$$ $$rad/s$$. At resonance the voltage across $$L$$ is

$$2.5 \times {10^{ - 2}}V$$

$$40$$ $$V$$

$$250$$ $$V$$

$$4 \times {10^{ - 3}}V$$

AIEEE 2006

MCQ (Single Correct Answer)

-1

In an $$AC$$ generator, a coil with $$N$$ turns, all of the same area $$A$$ and total resistance $$R,$$ rotates with frequency $$\omega $$ in a magnetic field $$B.$$ The maximum value of $$emf$$ generated in the coil is

$$N.A.B.R.$$$$\omega $$

$$N.A.B$$

$$N.A.B.R.$$

$$N.A.B.$$$$\omega $$

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