resistance

Question 1

what is resistance?

Answer 1

the collision of electrons with the ions in the metal

Question 2

what do collisions result in?

Answer 2

the transfer of energy from the kinetic store of the electrons to the kinetic store of the metal ions

Question 3

does resistance increase or decrease with temperature?

Answer 3

increase because as the temperature increases, the metal ions vibrate faster resulting in more collisions, which further increases resistance which then increases temp

Question 4

does current increase or decrease as resistance decreases?

Answer 4

decreases as resistance increases

Question 5

what is ohms law?

Answer 5

resistance is directly proportional to potential difference and resistance is inversely proportional to current

Question 6

what are resistors used for?

Answer 6

in a circuit to control the current

Question 7

what will a higher resistance give?

Answer 7

a lower current

Question 8

what will a lower resistance give?

Answer 8

a higher current

Question 9

simple definition of resistance?

Answer 9

the opposition to the flow of current