Electrostatics

In an electrically neutral atom, the number of proton equals the number of _____

• electrons

• neutrons

• nucleons

• electrons+neutrons

To say that the charge of an object is an integral multiple of the charge of an electron is to say that the charge is __

• conserved

• shared

• transferred

• quantized

What will happen to an uncharged conducting sphere if brought in contact with a highly positive body?

• it becomes polarized

• it becomes uncharged

• it becomes positively charged

• it becomes negatively charged

An electric charge can exert force on other charged objects even though they are at same distance away.

• True

• False

The greater the number of lines of force the weaker the electric field.

• True

• False

Lines of force start from positively charged particles & end on negatively charged particles or continue toward infinity

• true

• false

The unit of electric field is N/C. An equivalent unit of E is ____

• Vm

• V/m

• C/m

• C/V

Which practically offers no resistance to the flow of charges through it?

• conductor

• insulator

• semiconductor

• superconductor

The force between two charges is separated by 1 m is F.What is the new force if the distance between them is doubled?

• 2F

• 1/2F

• 1/4F

• 4F

The force between two charges is separated by 1 m is F.What is the new force if the distance between them is doubled?

• zero

• short for a long time

• huge for a short time

• small enough to be safe