Magnet

Q.

Which of the following is not attracted by a magnet ?

(a) steel

(b) cobalt

(c) brass

(d) nickel

Q. Electric field at far away distance r on the axis of a dipole is Eo. What is the electric field at a distance 2r on pependicular to bisector?

Q.

Where do the manufacturers use a magnetic strip in the refrigerator? Why is this magnetic strip used?

Q. A magnet attracts:

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

Q. Find magnetic moment due to a hollow charged sphere.

Q.

Which of the following metal is not attracted by a magnet?

1. Nickel

2. Silver

3. Steel

4. Cobalt

Q.

What makes magnet behave as an attracting object

Q.

Magnetic tape can serve as:

1. Input Media

2. Output Media

3. Secondary Storage devices

4. None of the above

Q.

A magnet attracts:

(a) plastics

(b) any metal

(c) aluminium

(d) iron and steel

Q.

A box contains coins made of nickel and copper. How will you separate the coins using a powerful bar magnet?

Q. What is magnetic flux?

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

Q.

Which of the following is not attracted by a magnet?

1. Aluminium

2. Steel

3. cobalt

4. Nickel

Q.

At what temperature do magnets lose their magnetism?

Q. Magnets like every other thing, are made up atoms. So why do they behave differently from other objects as in case of attracting and repelling one another as well as in attracting iron?

Q. Match the properties with the types.

1. Attract
2. Repel
3. South pole
4. North pole

Q. A magnet is placed in earth's magnetic field with north pole of the magnet pointing north. At the neutral point

1. The earth's magnetic field is zero
2. The magnet's magnetic field is zero
3. The net magnetic field is $0$
4. The magnetic fields of the magnet and the earth are equal and opposite

Q. What condition is necessary for the production of current by electromagnetic induction?

Q.

so is our body having a magnetic field? And also is there an electric flow in our body?

Q.

Why does a compass needle get deflected when brought near a bar magnet ?

Q. Does magnetic field have mass ??

Q. A magnet attracts:

(a) plastics
(b) any metal
(c) aluminium
(d) iron and steel

Q. If we change in the direction of the current passing through the wire near to the magnetic needle:

1. position of the pole of the needle will change
2. position of the pole of the needle will remain same
3. change in position of the pole depends on the current intensity
4. none of the above is correct

Q.

is an ATM card made of magnet??