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 0.5 amps.
| 15 V | |
| 10 V | |
| 4 V | |
| 5 V |