ohm's law

Question 1

What is ohm’s law?

Answer 1

The ratio of potential difference to current is a constant called resistance

Question 2

What is potential difference?

Answer 2

Voltage (V)

Question 3

What is current?

Answer 3

Ampere (I)

Question 4

What is resistance?

Answer 4

Ohm (Ω)

Question 5

How is voltage (V) calculated?

Answer 5

IR

Question 6

How is current (I) calculated?

Answer 6

V/R

Question 7

How is resistance (R) calculated?

Answer 7

V/I

Question 8

What are non-ohmic electrical loads?

Answer 8

Electrical loads that do not obey ohm’s law => do not have constant resistance when they heat up

Question 9

In a non-ohmic load, the current of a light bulb does not increase as much because?

Answer 9

Resistance increases as temperature increases

Question 10

What are 4 factors that affect the resistance of wires?

Answer 10

• type of material
• length of wire
• thickness
• temperature

Question 11

Longer or shorter wire has more resistance?

Answer 11

Longer

Question 12

Does narrow wire have more or less resistance?`

Answer 12

More resistance

Question 13

Does higher temperature have more or less resistance?

Answer 13

More– more particles moving around and blocking it