Exam 30: Ohms Law and Electrical Relationships

A furnace for an electric heating system is rated as 120 amperes and 30,000 watts. What is the voltage of this system?

A lamp with a resistance of 60 ohms is connected across 120 volts. What current does the lamp receive in amperes?

Use Ohm's law to find the missing value and round to the nearer hundredth when necessary: If voltage = 36 volts and current = 4.8 amperes, find the resistance.

The unit of measure for power is volts.

Use Ohm's law to find the missing value and round to the nearer hundredth when necessary: If resistance = 750 ohms and current = 0.05 amperes, find the voltage.

Resistance is the opposition to the flow of electric charge and it is measured in ohms.

Find the total resistance for the two resistors connected in parallel if the first resistor is 18 ohms and the second resistor is 36 ohms.

A technician uses a 100-watt bulb in a portable light. This is plugged into a regular 120-volt household outlet. What does the bulb have flowing through it when it is on?

The two electric baseboard heater units are placed in a room wired in series. If one resistance is 220 ohms and the other is 110 ohms, what is the total resistance for the room?

Use Ohm's law to find the missing value and round to the nearer hundredth when necessary: If resistance = 18 ohms and voltage = 9 volts, find the current.