Resistance

Question 1

What is resistance?

Answer 1

Resistance is opposition to the flow of current.

Question 2

What is the unit of resistance?

Answer 2

Ohms (Ω)

Question 3

What is the symbol of resistance in an equation?

Answer 3

R

Question 4

What does R stand for?

Answer 4

Resistance

Question 5

What does I stand for?

Answer 5

Current

Question 6

What does V stand for?

Answer 6

Voltage

Question 7

Different ___________ have different levels of ____________.

Answer 7

Different materials have different levels of resistance.

Question 8

What other store is the resisted energy normally transformed into?

Answer 8

Thermal energy

Question 9

What is the triangle of Ohms Law?

Answer 9

V
————
I. x. R

Question 10

How do you work out voltage?

Answer 10

V= IxR

Question 11

How do you work out current?

Answer 11

I = V/R

Question 12

How do you work out resistance?

Answer 12

R = V/I

Question 13

What types of resistor are there?

Answer 13

. Fixed Resistor
. Variable Resistor
. Light dependant resistor
. Thermistor

Question 14

The __________ the wire the ____________ the resistance.

Answer 14

The longer the wire the higher the resistance.

Question 15

How do you work out the gradient?

Answer 15

Gradient = △y/△x
(Change in y divided by change in x)

Question 16

On a graph with voltage on the y axis and current on the x axis what is the gradient?

Answer 16

Gradient = V/I

Question 17

On a graph with voltage on the y axis and current on the x axis if it’s a steep line is the resistance high or low?

Answer 17

High

Question 18

On a graph with current on the y axis and voltage on the x axis what is the gradient?

Answer 18

The reciprocal
Gradient = 1/R

Question 19

On a graph with current on the y axis and voltage on the x axis if it’s a steep line is the resistance high or low?

Answer 19

Low