1
GATE EE 1999
MCQ (Single Correct Answer)
+1
-0.3
Two parallel wires separated by a distance $$'d'$$ are carrying a current $$'{\rm I}'$$ in the same direction. The magnetic field along a line running parallel to these wires at midway between them
A
depends upon $$'{\rm I}'$$
B
is zero
C
depends upon $$'d'$$
D
depends upon the permeability of medium between the wires.
2
GATE EE 1996
MCQ (Single Correct Answer)
+1
-0.3
The energy stored in the magnetic field of solenoid $$30$$ $$cm$$ long and $$3$$ $$cm$$ diameter wound with $$1000$$ turns of wire carrying a current of $$10$$ $$A$$ is
A
$$0.015\,\,J$$
B
$$0.15$$ $$J$$
C
$$0.5$$ $$J$$
D
$$1.15$$ $$J$$
3
GATE EE 1994
True or False
+1
-0
Static magnetic fields induce currents in closed conducting loops.
A
TRUE
B
FALSE
4
GATE EE 1993
MCQ (Single Correct Answer)
+1
-0.3
The line integral of the vector potential A around the boundary of a surface S represents
A
flux through the surface S
B
flux density in the surface S
C
magnetic density
D
current density
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