1

AIEEE 2010

MCQ (Single Correct Answer)

+4

-1

In the circuit shown below, the key $$K$$ is closed at $$t=0.$$ The current through the battery is

2

AIEEE 2009

MCQ (Single Correct Answer)

+4

-1

An inductor of inductance $$L=400$$ $$mH$$ and resistors of resistance $${R_1} = 2\Omega $$ and $${R_2} = 2\Omega $$ are connected to a battery of $$emf$$ $$12$$ $$V$$ as shown in the figure. The internal resistance of the battery is negligible. The switch $$S$$ is closed at $$t=0.$$ The potential drop across $$L$$ as a function of time is :

3

AIEEE 2007

MCQ (Single Correct Answer)

+4

-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

4

AIEEE 2006

MCQ (Single Correct Answer)

+4

-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

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