Moving Charges and Magnetism Test

Result

Moving Charges and Magnetism Test - 5

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Weekly Quiz Competition

Question 1
1 / -0

A magnetic field can be produced

A
Only by moving charge

B
Only by changing electric field

C
Both A and B

D
Only by a moving conductor

Solution

Electric current or moving charges produce magnetic field around them.
Question 2
1 / -0

How will a freely suspended magnet on earth align itself?

A
it will align itself in north direction.

B
it will align itself in north-south direction

C
it will remain as it is.

D
it will align itself in north-west direction

Solution

A freely suspended magnet will align itself along the north-south direction due to the magnetic field of earth.
Question 3
1 / -0

What will happen when a bar magnet is broken into two halves along its length?

A
the magnet will be separated into north and south magnets

B
the broken magnets will themselves be smaller magnets with their own south and north poles.

C
the magnet will lose its magnetism

D
the resulting smaller will partly lose its magnetism

Solution

The bar magnet, when broken, will not be separated into north or south magnets. Instead the broken magnets will themselves be smaller magnets with their own north and south poles.
Question 4
1 / -0

Harry is lost in the woods. He needs a compass to find his way back home but he only has a needle and some water. What should he do?

A
he can look for a house in search of a compass.

B
he can seek someone who can help him find the way.

C
he can walk in the direction that seems right.

D
he can manufacture a compass out of the stuff he has with him.

Solution

Harry has a needle, which can be very weakly magnetized by rubbing it with a rock continuously. After this the needle can be placed in a leaf or some floating substance and placed in a small pool of water and the needle will align itself with north and south. With the needle and the sun’s position harry can determine the directions.