Magnets

Q.

A bar magnet is cut into three parts. How many north poles will we get?

1. 1

2. 2

3. 3

4. 4

Q.

Name any three devices which use permanent magnets. Name some sources of direct current. [3 MARKS]

Q. When we cut the magnet then is it compulsory that it will only cut with separated North and south poles only it can't be cutted with the North north or with south south poles

Q.

which shape of magnet is the strongest and why??

Q.

If a bar magnet's head '1' is brought closer to another bar magnet's head '2', it was observed that they repel each other. What can be the poles of part 1 and part 2?

1. 1-North, 2-South

2. 1-South, 2-North

3. 1-North, 2-North

4. 1-South, 2-South

Q.

If two horse shoe magnets of equal strengths are connected as shown in the figure then where will be the new magnetic north-pole?

1. near point 1

2. near point 2

3. near point 3

4. there will be no magnetic north-pole.

Q. A naturally occurring magnet that can attract iron and other substances which have magnetic properties is called as a ___ .

Q.

If we break a bar magnet into two pieces, how many total south poles are formed?

1. 1

2. 2

3. 4

4. 3

Q.

There is a bar in my hand. When I suspend it using a thread, it aligns itself such that one end faces the geographic north direction. It also attracts items made of similar materials. What can this bar be considered analogically similar to?

1. A bar magnet

2. A battery

3. An electric bulb

4. A water tank

Q. A magnet attracts:

1. magnetic substances
2. anything close to it
3. charged substances
4. only iron

Q. where is the neutral point of earths magnet field

Q.

Which of the following is not attracted by a magnet?

1. Tesla

2. Watt

3. Mho

4. Farad