1
AIEEE 2008
MCQ (Single Correct Answer)
+4
-1
Two coaxial solenoids are made by winding thin insulated wire over a pipe of cross-sectional area $$A=$$ $$10\,\,c{m^2}$$ and length $$=20$$ $$cm$$ . If one of the solenoid has $$300$$ turns and the other $$400$$ turns, their mutual inductance is
$$\left( {{\mu _0} = 4\pi \times {{10}^{ - 7}}\,Tm\,{A^{ - 1}}} \right)$$
A
$$2.4\pi \times {10^{ - 5}}H$$
B
$$4.8\pi \times {10^{ - 4}}H$$
C
$$4.8\pi \times {10^{ - 5}}H$$
D
$$2.4\pi \times {10^{ - 4}}H$$
2
AIEEE 2007
MCQ (Single Correct Answer)
+4
-1
An ideal coil of $$10H$$ is connected in series with a resistance of $$5\Omega $$ and a battery of $$5V$$. $$2$$ second after the connection is made, the current flowing in ampere in the circuit is
A
$$\left( {1 - {e^{ - 1}}} \right)$$
B
$$\left( {1 - e} \right)$$
C
$$e$$
D
$${{e^{ - 1}}}$$
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
A
$$P = \sqrt 2 {E_0}{I_0}$$
B
$$P = {{{E_0}{I_0}} \over {\sqrt 2 }}$$
C
$$P=zero$$
D
$$P = {{{E_0}{I_0}} \over 2}$$
4
AIEEE 2006
MCQ (Single Correct Answer)
+4
-1
Which of the following units denotes the dimension $${{M{L^2}} \over {{Q^2}}}$$, where $$Q$$ denotes the electric charge?
A
$$Wb/{m^2}$$
B
Henry $$(H)$$
C
$$H/{m^2}$$
D
Weber $$(Wb)$$
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