Magnetism and Matter Test

Result

Magnetism and Matter Test - 26

Score
-
out of -
Rank
-
out of -

TIME Taken - -

SHARING IS CARING

If our Website helped you a little, then kindly spread our voice using Social Networks. Spread our word to your readers, friends, teachers, students & all those close ones who deserve to know what you know now.

Weekly Quiz Competition

Question 1
4 / -1

The incorrect statement regarding the lines of force of the magnetic field B is

A
Magnetic intensity is a measure of lines of force passing through unit area held normal to it

B
Magnetic lines of force form a close curve

C
Inside a magnet, its magnetic lines of force move from north pole of a magnet towards its south pole

D
Due to a magnet magnetic lines of force never cut each other
Question 2
4 / -1

A straight wire carrying current i is turned into a circular loop. If the magnitude of magnetic moment associated with it in M.K.S. unit is M, the length of wire will be

A

B

C

D

Solution
Question 3
4 / -1

For protecting a sensitive equipment from the external magnetic field, it should be

A
Placed inside an aluminum case

B
Placed inside an iron case

C
Wrapped with insulation around it when passing current through it

D
Surrounded with fine copper sheet
Question 4
4 / -1

If a piece of metal was thought to be magnet, which one of the following observations would offer conclusive evidence

A
It attracts a known magnet

B
It repels a known magnet

C
Neither (a) nor (b)

D
It attracts a steel screw driver
Question 5
4 / -1

The magnet can be completely demagnetized by

A
Breaking the magnet into small pieces

B
Heating it slightly

C
Dropping it into ice cold water

D
A reverse field of appropriate strength
Question 6
4 / -1

A current loop placed in a magnetic field behaves like a

A
Magnetic dipole

B
Magnetic substance

C
Magnetic pole

D
All are true
Question 7
4 / -1

A magnet when placed perpendicular to a uniform field of strength 10^–4 Wb/m² experiences a maximum couple of moment 4 × 10^–5 N/m. What is its magnetic moment

A
0.4 A × m²

B
0.2 A × m²

C
0.06 A × m²

D
0.04 A × m²

Solution
Question 8
4 / -1

Weber/m² is equal to

A
Volt

B
Henry

C
Tesla

D
All of these

Solution
Question 9
4 / -1

Two magnets, each of magnetic moment ‘M’ are placed so as to form a cross at right angles to each other. The magnetic moment of the system will be

A
2 M

B
√2 M

C
0.5 M

D
M

Solution
Question 10
4 / -1

Two like magnetic poles of strength 10 and 40 SI units are separated by a distance 30 cm. The intensity of magnetic field is zero on the line joining them

A
At a point 10 cm from the stronger pole

B
At a point 20 cm from the stronger pole

C
At the mid-point

D
At infinity

Solution