Ohm's Law

Question 1

Kaya collects the data shown in the table.

Revolt · Accepted Answer

20

Question 2

Which symbol and unit of measurement are used for electric current?

Revolt · Accepted Answer

symbol: I; unit: A

Question 3

Which symbol and unit of measurement are used for voltage?

Revolt · Accepted Answer

symbol: V; unit: V

Question 4

A hair dryer has a resistance of 11.5 . What current does it conduct when it is plugged into a wall outlet that provides 120 V?

Revolt · Accepted Answer

10.4 A

Question 5

Which symbol and unit of measurement are used for resistance?

Revolt · Accepted Answer

symbol: R; unit :

Question 6

A light bulb has a resistance of 360 . What is the current in the bulb when it has a potential difference of 120 V across it?

Revolt · Accepted Answer

0.33 A

Question 7

When the resistance in a circuit remains constant, how are the voltage and current related?

Revolt · Accepted Answer

The current doubles when the voltage doubles because they are directly proportional.

Question 8

Which statement describes the relationship of voltage and current?

Revolt · Accepted Answer

Voltage is directly proportional to current because I = .

Question 9

A circuit has a current of 2.4 A. The voltage is increased to 4 times its original value, while the resistance stays the same.

Revolt · Accepted Answer

It should increase to four times its value.

Question 10

Jaipal measures a circuit at 1.2 A and 24 . Using Ohm’s law, what can he calculate for the circuit?

Revolt · Accepted Answer

voltage (V)

Ohm's Law Answers