Static Electricity

If you rub a piece of polythene with a cloth duster, the polythene becomes negatively charged and the cloth becomes positively charged.

What happened to the polythene and cloth to cause this charge?
1. Polythene: gained electrons; Cloth: gained protons
2. Polythene: gained electrons; Cloth: lost electrons
3. Polythene: gained electrons; Cloth: gained electrons
4. Polythene: gained electrons; Cloth: lost electrons
How does an ebonite rod become negatively charged when it is rubbed with a duster?
1. The duster gains protons.
2. The duster loses electrons
3. The rod gains protons.
4. The rod loses electrons
Which diagram correctly shows the forces acting on two charged, suspended spheres?
1. A
2. B
3. C
4. D
When a negatively charged polythene is brought close to (but not touching) an uncharged metal sphere, some effects take place.

Which one of the above diagrams best represents this distribution of charge on the sphere?
1. A
2. B
3. C
4. D
A piece of paper which is initially uncharged is picked up by a charged rod.

Which one of the above diagrams is correct?
1. A
2. B
3. C
4. D
Two metal balls, P and Q, each hangs from a nylon thread as shown below.

A negatively charged rod is then placed between them. While P is repelled by the rod, Q is attracted to the rod.
What are the charges of P and Q?
1. P: uncharged; Q: positive
2. P: positive; Q: positive
3. P: positive; Q: negative
4. P: negative; Q: positive
The diagram shows a positively charged acetate strip and a negatively charged polythene strip that are freely suspended.
Two rods X and Y are brought up in turn to these two strips. Rod X attracts the acetate strip but repels the polythene strip. Rod Y does not repel either the acetate strip or the polythene strip.

Which type of charge is one each rod?
rod X rod Y
A negative positive
B negative uncharged
C positive negative
D positive uncharged
1. A
2. B
3. C
4. D
Two plastic rods are negatively charged. Rod 2 hangs freely.

What happens when rod 1 is brought towards end X and then towards end Y of rod 2?

end X end Y
A the rods attract the rods attract
B the rods attract the rods repel
C the rods repel the rods attract
D the rods repel the rods repel
1. A
2. B
3. C
4. D
Why is a positively charged object made neutral (discharged) by someone touching it?
1. Electrons flow on the object.
2. Electrons flow from the object.
3. Neutrons flow on to the object.
4. Protons flow on to the object.

	rod X	rod Y
A	negative	positive
B	negative	uncharged
C	positive	negative
D	positive	uncharged

	end X	end Y
A	the rods attract	the rods attract
B	the rods attract	the rods repel
C	the rods repel	the rods attract
D	the rods repel	the rods repel

Static Electricity

Multiple Choice Questions