PHYSICS : REVISION TEST ON TOPICS OF CLASS XII ---VII

A bar magnet is oscillating in earth’s magnetic filed with a period T. What happens to its period of motion, if its mass is quadruped
Motion remains simple harmonic with new period = T/2
Motion remains simple harmonic with new period = 2T
Motion remains simple harmonic with new period = 4T
Motion remains simple harmonic and the period stays nearly constant
A coil in the shape of an equilateral triangle of side  is suspended between the pole pieces of a permanent magnet such that  is in plane of the coil. If due to a current I in the triangle a torque  acts on it, the side  of the triangle is:
The work done in turning a magnet of magnetic moment M by an angle of  from the meridian, is n times the corresponding work done to turn it through an angle of . The value of n is given by
2
1
0.5
0.25
If a diamagnetic substance is brought near north or south pole of a ar magnet, it is
Attracted by the poles
Repelled by the poles
Repelled by north pole and attracted by the south pole
Attracted by the north pole and repelled by the south pole
A galvanometer having a resistance of 8 ohms is shunted by a wire of resistance 2 ohms. If the total current is 1 amp, the part of its passing through the shunt will be
0.25 amp
0.8 amp
0.2 amp
0.5 amp
A galvanometer can be converted into a voltmeter by connecting
A high resistance in parallel
A low resistance in series
A high resistance in series
A low resistance in parallel
A galvanometer acting as a voltmeter will have
A low resistance in series with its coil.
A high resistance in parallel with its coil
A high resistance in series with its coil
A low resistance in parallel with its coil
A galvanometer of 50-ohm resistance has 25 divisions. A current of  ampere gives a deflection of on division. To convert this galvanometer into a voltmeter having a range of 25 volts, it should be connected with a resistance of
A galvanometer of resistance 20  gives full scale deflection with a current of 0.004 A. to convert it into an ammeter of range 1 A, the required shunt resistance should be
Description:

TOPICS : MAGNETISM, CONVERSION OF GALVANOMETER TO AMMETER AND VOLTMETER

Discussion
Kajal Sengupta
Physics 9th to 12 th grade,CIE, Edexcel, AP, IB , CBSE, ICSE
User
87 Members Recommend
880 Followers

Your Facebook Friends on WizIQ

More Tests By Author

PHYSICS : REVISION TEST ON TOPICS OF CLASS XII ---XIII
10 Questions | 1039 Attempts

PHYSICS : REVISION TEST ON TOPICS OF CLASS XI --XIII
10 Questions | 256 Attempts

PHYSICS : REVISION TEST ON TOPICS OF CLASS XI --XII
10 Questions | 389 Attempts