Conductor and Insulator

Q. What is similarities and differences between metal and non-metal

Q.

Out of the following which is the best conductor?

1. Iron

2. Aluminium

3. Silver

4. Copper

Q.

Which of the following is an insulator of electricity?

1. Human body

2. Copper

3. Silver

4. Distilled water

Q.

An insulator like wood and rubber has a very low resistance.

1. False

2. True

Q.

Which of the following are not the mobile charge carriers in a conductor?

1. Electrons

2. Protons

3. Neutrons

4. Deutrons

Q.

Air is a ______ conductor of electricity

Q.

What is the use of a glass bulb in an electric bulb? Can we use the electric bulb without the glass bulb in the space?

Q.

When a potential difference is applied across the resistor, the movement of electrons will be:

1. Parabolic

2. Circular

3. Straight line

4. Zig zag

Q. Mercury is a/an ______ of electricity, and pure water is a/an ______ of electricity.

1. conductor; insulator
2. insulator; insulator
3. insulator; conductor
4. conductor; conductor

Q.

How do we measured super conductor and what is the formula of it and where is found the super conductor

Q. __ is an example of a non-metal which conducts electricity.

Q. What among the following will conduct electricity?

1. Human body
2. A bird
3. A copper rod
4. Rubber tyre

Q. Insulators can be charged but do not conduct electric charge. State whether it is True or False.

1. True
2. False

Q. Dry air is a good conductor of electricity. True or False?

1. True
2. False

Q.

Find the work done to transfer ${10}^{19}$ electrons from point A to B which are maintained at a potential diffrence of 5 volts.

1. 8 J

2. 10 J

3. 5 J

4. 1 J

Q.

Select non-conductors of electricity from the following

1. Rubber

2. Pure water

3. Copper wire

4. acidulated water

Q.

In case of semiconductors {germanium }why does conductivity increase with increase in temperature ??

Q.

The wider the cross-section of a conductor, the higher the current.

1. True

2. False

Q. There are a bulb and a battery, and a person connects them using a plastic tube. The bulb doesn’t glow. Instead, when he uses a copper wire to connect them, the bulb glows. Which of the following is true?
i) Copper allows current to flow easily
ii) Plastic tube doesn’t allow the current to flow easily
iii) Plastic tube absorbs the current.
iv) Copper wire generates extra current

1. i) and ii)
2. ii) and iv)
3. iii) and iv)
4. i), iii) and iv)