Physics Question Preview (ID: 6379)


Electrostatics. TEACHERS: click here for quick copy question ID numbers.

Objects can be charged by
a) friction
b) contact
c) induction
d) all answers are correct

A rubbed balloon will stick to a wooden wall, which demonstrates charge
a) transfer
b) potential
c) conservation
d) polarization

A water molecule is an example of an electric dipole.
a) True
b) False
c)
d)

The unit for charge is the
a) joule
b) newton
c) ampere
d) coulomb

A material is a good insulator if outer electrons are free to roam around and are loosely arranged.
a) True
b) False
c)
d)

53 electrons, 60 neutrons, and 61 protons are within an atom. What is the net charge on this atom?
a) + 7 charge
b) +8 charge
c) - 8 charge
d) - 7 charge

Semiconductors can be made to conduct electricity and they can also be made to at like good insulators.
a) True
b) False
c)
d)

A 1.2 x 10^-4 charge and a 1.3 x 10^-4 charge are separated by a distance of 5 m. What is the magnitude of the electric force between them?
a) 28 N
b) 5.6 N
c) 5.2 N
d) 26 N

A 2.0 C charge and a 4.0 C charge attract each other with 10 N of force. How much force will a 2.0 charge and a 12.0 charge attract each other if the distance does not change?
a) 5 N
b) 12 N
c) 10 N
d) 30 N

When we allow charges to move off or onto a conductor by touching it with something connected to Earth, it is common to say we are grounding it.
a) True
b) False
c)
d)

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