Ohm's law specifies the relationship between voltage (V), current (I), and resistance (R) in an electrical circuit: V = IR.
 Use Ohm's Law to calculate the value of current in this circuit if voltage is 120 volts and resistance is 40 Ω.
Use Ohm's Law to calculate the value of current in this circuit if voltage is 120 volts and resistance is 40 Ω.
| -1 A | |
| 2.7 A | |
| 6 A | |
| 3 A |