Resistor combinations

Question 1

Name an advantage oh having a high resistance

Answer 1

Can be used in heaters as it produces heat

Question 2

Name a disadvantage of having a high resistance

Answer 2

Could damage circuits because of the produced heat

Question 3

What does a fixed resistor do?

Answer 3

Adds known levels of resistance into a circuit to control a current

Question 4

How do you find the total resistance in a circuit?

Answer 4

You add up all of the values from the resistors

Question 5

How do you increase the total resistance?

Answer 5

Add resistors in series’

Question 6

What is the same in any series circuit?

Answer 6

The current is the same all the way around the circuit

Question 7

How do you reduce the total resistance?

Answer 7

Add resistors in parallel circuits

Question 8

What is the equation for total resistance when the resistors are the same?

Answer 8

1/r = 1/r2 + 1/r2

Question 9

What is the equation for total resistance when the resistors are different?

Answer 9

R = ( R1 x R2 ) / ( R1 + R2)