If you can, can you explain how you got the answers you did? Thank you! If an ob

Question

If you can, can you explain how you got the answers you did? Thank you!

If an object in an electric field with a charge of 3 C feels a force of 12 N, what is the strength of the electric field?

0.75 N/C

3.0 N/C

4.0 N/C

12 N/C

36 N/C

QUESTION 2

If two charged particles double the strength of both their charges, how will the electric force between them change?

It will double

It will quadruple

It will be halved

It will be quartered

There will be no effect

QUESTION 3

If you bring your hand close to a car door, and the door surface near your hand becomes negatively charged, what can you say about your hand?

It is also negatively charged

It is positively charged

It has no charge

It is charged, but you cannot know which kind of charge

You hand must be a conductor

QUESTION 4

What can I add to an atom to change its electrical properties?

An electron

A neutron

A proton

Either A or C

All of the above

QUESTION 5

Which material would probably be the best to use as an electrical conductor?

Woven cloth

Plastic tubing

Rubber strips

Ceramic tile

Gold plating

0.75 N/C

3.0 N/C

4.0 N/C

12 N/C

36 N/C

Explanation / Answer

1) F=Q*E
Given Q=3C,F=12N Hence E=F/Q => E=4 N/C

2)The force will be quadrapuled because the Electric Force is directly proportional to the product of the charges. Hence FNEW = 4*FOLD.

3)It is Positively charged because the door took electrons from the hand. Hence the lack of electrons make the hand Positively Charged.

4)Answer is Either A or C. An atom consists of equal number of electrons and protons, if we add either electron or proton the atom gets either negetively or positively charged respectively.

5)Woven Clothing are recently being developed to act as conductors.

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