SP6c Resistance

Question 1

What does resistance measure and what is it measure in?

Answer 1

.how difficult it is for electric current to pass through a component for an applied voltage
.measured in ohms

Question 2

What is a resistor?

Answer 2

a component that dissipates energy thermally when work is done through it.

Question 3

If potential difference is constant and we increase the resistance in a circuit, will the current increase or decrease?

Answer 3

decrease.

Question 4

If potential difference is constant and we decrease the resistance in a circuit, will the current increase or decrease?

Answer 4

increase.

Question 5

Describe resistors in series.

Answer 5

.when resistors are connected in series, total resistance is increased
.the pathway is harder for current to pass through

Question 6

Describe resistors in parallel.

Answer 6

.when resistors are connected in parallel, total resistance in reduced
.this is because there are multiple pathways so more current can pass

Question 7

potential difference = ?

Answer 7

current x resistance