Ohms Law

A bulb draws 0.5 amperes from a 120-volt supply. What is the resistance of the bulb?

• 200 Ω

• 240 Ω

• 250 Ω

• 300 Ω

A bulb draws 0.6 amperes from a 150-volt supply. What is the resistance of the bulb?

• 100 Ω

• 125 Ω

• 150 Ω

• 250 Ω

A bulb draws 0.4 amperes from a 90-volt supply. What is the resistance of the bulb?

• 225 Ω

• 250 Ω

• 300 Ω

• 360 Ω

A bulb draws 0.7 amperes from a 140-volt supply. What is the resistance of the bulb?

• 171 Ω

• 200 Ω

• 220 Ω

• 250 Ω

A current of 2 amperes is flowing through a resistor of 15 ohms. What is the voltage across the resistor?

A current of 3 amperes is flowing through a resistor of 20 ohms. What is the voltage across the resistor?

• 45 V

• 50 V

• 55 V

• 60 V

A current of 1.5 amperes is flowing through a resistor of 10 ohms. What is the voltage across the resistor?

• 10 V

• 15 V

• 20 V

• 25 V

A current of 2.5 amperes is flowing through a resistor of 25 ohms. What is the voltage across the resistor?

• 45 V

• 50 V

• 55 V

• 62.5 V

A device using 18 watts of power is connected to a 9-volt battery. What is the current drawn by the device and what is the resistance of the device?

• 2 A, 4.5 Ω

• 3 A, 3 Ω

• 4 A, 2.25 Ω

A device using 24 watts of power is connected to a 12-volt battery. What is the current drawn by the device and what is the resistance of the device?

• 2 A, 6 Ω

• 3 A, 5 Ω

• 4 A, 4 Ω

• 6 A, 7 Ω