1
AIPMT 2006
+4
-1
Two coils of self inductance 2 mH and 8 mH are placed so close together that the effective flux in one coil is completely linked with the other. The mutual inductance between these coils is
A
16 mH
B
10 mH
C
6 mH
D
4 mH
2
AIPMT 2005
+4
-1
As a result of change in the magnetic flux linked to the closed loop as shown in the figure, an e.m.f. $$V$$ volt is induced in the loop. The work done (joule) in taking a charge Q coulomb once along the loop is

A
QV
B
2QV
C
QV/2
D
zero
3
AIPMT 2004
+4
-1
The magnetic flux through a circuit of resistance R changes by an amount $$\Delta$$$$\phi$$ in a time $$\Delta$$t. Then the total quantity of electric charge Q that passes any point in the circuit during the time $$\Delta$$t is represented by
A
$$Q = {1 \over R}.{{\Delta \phi } \over {\Delta t}}$$
B
$$Q = {{\Delta \phi } \over R}$$
C
$$Q = {{\Delta \phi } \over {\Delta t}}$$
D
$$Q = R.{{\Delta \phi } \over {\Delta t}}$$
4
AIPMT 2001
+4
-1
For a coil having L = 2 mH, current flow through it is $$I = {t^2}{e^{ - t}}$$ then, the time at which emf become zero
A
2 sec
B
1 sec
C
4 sec
D
3 sec
EXAM MAP
Medical
NEET