What is the smallest electric charge that can be put on an object?
9.00 x 10 ^9 C
9.11 x 10 ^-31 C
1.60 x 10 ^-19 C
6.25 x 10 ^18 C
An object cannot have a charge of
3.2 x 10^–19 C
8.0 x 10^–19 C
4.5 x 10^–19 C
9.6 x 10^–19 C
When a neutral metal sphere is charged by contact with a positively charged glass rod, the sphere
loses electrons
loses protons
gains electrons
gains protons
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 negative or neutral
may be positive or neutral
must be negative
must be positive
An object possessing an excess of 6.0 x 10^6 electrons has a net charge of
2.7 x 10^-26 C
3.8 x 10^-13 C
5.5 x 10^-24 C
9.6 x 10^-13 C
2 identical metal spheres, A and B, are placed on insulated stands. Sphere A has a charge of -9 x 10^- 6 C and sphere B has a charge of 3 x 10^-6 C. If the spheres are brought into contact with each other and then separated, the charge on sphere A will be
0 C
-3 x 10^-6 C
+3 x 10^-6 C
-6 x 10^-6 C
If the charge on each of two small charged metal spheres is doubled and the distance between the spheres remains fixed, the magnitude of the electric force between the spheres &
will be the same
one-half as great
two times as great
four times as great
When two neutral materials are rubbed together, there is a transfer of electrical charge from one material to the other. The total electrical charge for the system
increases as electrons are transferred
increases as protons are transferred
remains constant as protons are transferred
remains constant as electrons are transferred
A positively charged rod is held near, but does not touch the knob of a neutral electroscope. The charge on the knob becomes
positive and the leaves become positive
positive and the leaves become negative
negative and the leaves become positive
negative and the leaves become negative
Why does a neutral hard rubber rod become negatively charged when rubbed with wool ?