Static electricity questions | form two Physics

An electrostatic machine which produces an unlimited supply of sparks by induction is called
A a gold leaf electroscope B an electrophorus
C a generator D a speedometer.

Charging an object by friction results in the transfer of particles called:
A. atoms
B. electrons
C. neutrons
D. protons

If you comb your dried hair with a plastic or nylon comb, you might observe the comb attracting some small particles. What instrument would you use to determine whether the comb acquired some electric charge:
A. ammeter
B. electrophorus
C. gold-leaf electroscope
D. voltmeter

State the fundamental law of static electricity

The fundamental law of electrostatic charges states:

A negatively charged rod is brought near the cap of a negatively charged electroscope. The divergence of the gold leaf will:
A. decrease
B. decrease and then increase
C. increase
D. increase and then decrease.

Which of the following statements is not true for static electricity?
A. An electroscope is used to measure electric current
B. Charges concentrate on pointed parts than on flat parts of a charged body
C. In an atom the number of protons equals to the number of electrons
D. Like charges repel, unlike charges attract.

A device that is used to test for the sign of charge is called ……...

When charging bodies by friction, the particles which are transferred are:
A. electrons
B. neutrons
C. neutrons and protons
D. protons and electrons

(a) Define the term “electrostatics”

(b) Draw a diagram of the gold leaf electroscope and label the following: brass cap, insulator, earthed metal case, gold leaf, brass plate and brass rod.