1.Inside the magnet the field lines run
A.From south to north
B.Away from north pole
C.From north to south
D.Away from the south pole
2.An electric charge in uniform motion produces:
A.an electric field only
B.a magnetic field only
C.both electric and magnetic fields
D.no such field at all
3.The magnetic field inside the solenoid is
A.Non uniform
B.Variable
C.same at all points
D.zero
4.A free charged particle moves through a magnetic field. The particle may undergo a change in:
A.speed
B.energy
C.direction of motion
D.none of these
5.Two free parallel wires carrying currents in opposite directions:
A.attract each other
B.repel each other
C.do not affect each other
D.get moved to perpendicular to each other
6.A device used to test whether the current is flowing in a conductor or not is
A.Ammeter
B.Galvanometer
C.Voltmeter
D.magnetometer
7.A current is passed through a straight wire. The magnetic field established around it has its lines of force:
A.circular and endless
B.oval in shape and endless
C.straight lines
D.all of the above
8.Cyclotron is a device to:
A.to accelerate neutrons
B.accelerate electrons
C.both (a) and (b)
D.none of these
9.The core of electromagnet is:
A.soft iron
B.nickel
C.steel
D.copper
10.Field inside a solenoid is:
A.directly proportional to its length
B.directly proportional to current
C.inversely proportional to number of turns
D.inversely proportional to current
Answers will be updated soon...
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