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 voltage in this circuit if resistance is 20 Ω and current is 1 amps.
| 18 V | |
| 20 V | |
| 6.67 V | |
| 40 V |