Ohm's Law and Fractions

Ohm's Law Problems

100

A toaster uses 120 V and draws 5 A of current.
How many watts of power does it use?

600 Watts

200

A heater uses 1500 W of power when connected to a 120 V outlet.
What is its resistance?

9.6 Ohm's

300

A device has a resistance of 60 Ω and is plugged into a 240 V source.
How much current (Amps) flows through it?

4 Amps

400

A lightbulb draws 0.5 A of current and has a resistance of 100 Ω.
What is the voltage across it?

50 Volts

500

An electric device is connected to a 240 V power supply. It has a resistance of 30 Ω. 

How much current (Amps) flows through this device?

8 Amps

Fraction Add or Sub

100

1/6 + 5/6 = ?

1

200

5/8 - 3/8 = ?

1/4

300

1/4 + 1/2 = ?

3/4

400

3/5 - 1/10 = ? 

1/2

500

1 1/2 + 3/4 = ?

2 1/4

Fractions Muilt or Divide

100

2/3 x 4/5 = ?

8/15

200

3/4 Divided by 1/2 = ?

1 1/2

300

2 x 3/7 = ?

6/7

400

5/8 Divided by 2 = ?

5/16

500

1 3/4 x 2 3/8 = ?

4 5/32