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Developing: Ohm’s Law states that Voltage (V) = Current (I) x Resistance (R). You can calculate the voltage. You can also solve for current or resistance if you mathematically rearrange the equation.

Use Ohm’s Law to calculate the missing variable. Be sure to show your work in the space provided. Round to the nearest tenths.


What is the resistance of a light if the voltage is 12 V and the current is 15 A (living room)?




What is the voltage of a circuit with 15 amps (bedroom) of current and a bedroom light with 12 ohms of resistance?






There is a 28 resistance in the dryer. It is plugged into a 240 V circuit. How much current passes through the dryer?

Respuesta :

AL2006

V = I · R

I = V / R

R = V / I

R = V / I

Resistance of the living room light = (12V) / (15A)

Resistance of the light = 0.8 ohm

V = I · R

Voltage of the bedroom circuit = (15 A) · (12 ohms)

Voltage of the bedroom circuit = 180 volts

I = V / R

Current through the dryer = (240V) / (28 ohms)

Current through the dryer = 8.57 A

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