1
NEET 2013 (Karnataka)
MCQ (Single Correct Answer)
+4
-1
A current of 2.5 A flows through a coil of inductance 5 H. The magnetic flux linked with the coil is
A
0.5 Wb
B
12.5 Wb
C
zero
D
2 Wb
2
NEET 2013
MCQ (Single Correct Answer)
+4
-1
A wire loop is rotated in a magnetic field. The frequency of change of direction of the induced e.m.f. is
A
four times per revoluation
B
six times per revolution
C
once per revolution
D
twice per revolution
3
AIPMT 2012 Mains
MCQ (Single Correct Answer)
+4
-1
In a coil of resistance 10 $$\Omega$$, the induced current developed by changing magnetic flux through it, is shown in figure as a function of time. The magnitude of change in flux through the coil in weber is

A
8
B
2
C
6
D
4
4
AIPMT 2012 Prelims
MCQ (Single Correct Answer)
+4
-1
A coil of resistance 400 $$\Omega$$ is placed in a magnetic field. If the magnetic flux $$\phi$$ (Wb) linked with the coil varies with time t (sec) as $$\phi = 50{t^2} + 4$$.

The current in the coil at t = 2 sec is
A
0.5 A
B
0.1 A
C
2 A
D
1 A
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