1
AIEEE 2007
+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
$${{e^{ - 1}}}$$
2
AIEEE 2006
+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 $$(Wb)$$
3
AIEEE 2006
+4
-1
The flux linked with a coil at any instant $$'t'$$ is given by
$$\phi = 10{t^2} - 50t + 250$$
The induced $$emf$$ at $$t=3s$$ is
A
$$-190$$ $$V$$
B
$$-10$$ $$V$$
C
$$10$$ $$V$$
D
$$190$$ $$V$$
4
AIEEE 2006
+4
-1
An inductor $$(L=100$$ $$mH)$$, a resistor $$\left( {R = 100\,\Omega } \right)$$ and a battery $$\left( {E = 100V} \right)$$ are initially connected in series as shown in the figure. After a long time the battery is disconnected after short circuiting the points $$A$$ and $$B$$. The current in the circuit $$1$$ $$ms$$ after the short circuit is
A
$$1/eA$$
B
$$eA$$
C
$$0.1$$ $$A$$
D
$$1$$ $$A$$
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