Ohm's Law
An alarm clock draws 0.5 A of current when connected to a 120 volt circuit. Calculate the resistance. 240 Ω 0.004 Ω 60 Ω A subwoofer needs a household voltage of 110 V to push a current of 5.5 A through its coil. What is the resistance of the subwoofer? 0.05 Ω 20 Ω 605 Ω A circuit contains a 1.5 volt battery and a bulb with a resistance of 3 Ω. Calculate the current. 2 A 4.5 A 0.5 A What current flows through a hair dryer plugged into a 120 volt circuit if it has a resistance of 25 Ω? 4.8 A 3000 A 0.208 A A 12 volt car battery pushes charge through the headlight circuit resistance of 10 Ω. How much current is passing through the circuit? 120 A 0.12 A 1.2 A V= 6VI= 12 AFind R 72 Ω 0.5 Ω 2 Ω 0.05 Ω I = 3 AR = 9 ΩFind V 3 V 0.33 V 27 V 30 V V= 7 VR= 2 ΩFind I 3.5 A 14 A 0.29 A A 6 volt battery is attached to a 4 Ω resistor. What is the current in the circuit? 24 A 0.66 A 1.5 A If a 5.0 A current is running through a circuit with a 110 V power source, what is the resistance in the circuit? 550 Ω 22 Ω 0.045 Ω What is the voltage of a battery that is providing energy to a circuit with a 15 A current and 3 Ω of resistance? 5 Ω 45 V 0.45 V 0.2 V What is the voltage of a battery if the resistance is 12.0 Ω and the number of electrons that are passing through the wire in 10.0 min is 3.3 x 1020 ? 52.8 V 0.088 V 1.06 V 4.1 V