help with electricty c/o physical science

Question

1. how are electircy, magnestism and gravity similar? they are all

 

a.  forces which can either attract or repel

b.  forces wich act at a distance

c.  forces which become much stronger with distance

d.  all of these

 

2.  an electric force field is produced by a(n)

 

a.  electron

b.  proton

c.  flow of electrons

d.  moiving magnetic field

e.  all of these

 

3.  if you increase the voltage across a circuit but do not increase the resistance what will happen?

 

a.  the number of amperes teh circuit is carrying will increase

b.  the number of amperes the circuit is carrying will decrease

c.  the number of ohms in the circuit will increase

d.  the difference in the potential energy at both ends of the circuit will decrease

 

4.  if  you increase the resistance in a circuit but do not increase the voltage across a circuit what will happen?

 

a.  the number of amperes the circuit is carrying will increase

b.  the number of amperes the circuit is carrying will decrease

c.  the number of ohms in the circuit will decrease

d.  the difference in the potential energy at both ends of the circuit will increase

 

a big thanks

 

 

 

Answer 1

1) Gravity does not repel, and becomes weaker with distance according to the inverse square law (and so does the electrostatic force)

 

2) How is electric force generated?

 

3&4) What is the interpretation of Ohm's Law?