WorksheetsElectrostatics
Total questions: 10
Worksheet time: 8mins
A negatively charged plastic comb is brought close to, but does not touch, a small piece of paper. If the comb and the paper are attracted to each other, the charge on the paper
may be positive or neutral
must be positive
may be negative or neutral
must be negative
A balloon is rubbed against a student's hair and then touched to a wall. The balloon "sticks" to the wall due to
electrostatic forces between the particles of the balloon and the particles of the wall
magnetic forces between the particles of the balloon and the particles of the wall
electrostatic forces between the particles of the balloon
magnetic forces between the particles of the wall
An electroscope is a device with a metal knob, a metal stem, and freely hanging metal leaves used to detect charges. The diagram below shows a positively charged leaf electroscope.
As a positively charged glass rod is brought near the knob of the electroscope, the separation of the leaves will
remain the same
increase
decrease
A positively charged glass rod attracts object X. The net charge of object X
may be zero or positive
may be zero or negative
must be positive
must be negative
A glass rod becomes positively charged when it is rubbed with silk. This net positive charge accumulates because the glass rod
gains electrons
loses protons
loses electrons
gains protons
When a neutral metal sphere is charged by contact with a positively charged glass rod, the sphere
loses protons
gains protons
loses electrons
gains electrons
Metal sphere A has a charge of +12 elementary charges and identical sphere B has a charge of +16 elementary charges. After the two spheres are brought into contact, what is the charge on sphere A?
-2 elementary charges
+14 elementary charges
+28 elementary charges
+2 elementary charges
Two electrically neutral metal spheres, A and B, on insulating stands are placed in contact with each other. A negatively charged rod is brought near, but does not touch the spheres, as shown in the diagram below. How are the spheres now charged?
A is positive and B is negative.
A is negative and B is negative.
A is positive and B is positive.
A is negative and B is positive.
The diagram above shows three neutral metal spheres, x, y, and z, in contact and on insulating stands. Which diagram best represents the charge distribution on the spheres when a positively charged rod is brought near sphere x, but does not touch it?
The diagram above shows two identical metal spheres, A and B, on insulated stands. Each sphere possesses a net charge of -3 x 10-6 coulomb. If the spheres are brought into contact with each other and then separated, the charge on sphere A will be
-6 x 10-6 C
+3 x 10-6 C
-3 x 10-6 C
0 C
