3. solve the ff problems using the GRESA method
A.) How much current flows across a 1.5 V battery connected to a 15 ohms resistor?

B.) The lighter in Arkin's car has a resistance of 4.0 ohms. How much current does the lighter draw when it is operated by the 12 V battery of the car?

C.) What is the voltage of a source if a 0.25 Ampere current flows through a 5 ohms resistor?

D.) While cooking breakfast, Gael's oven toaster uses a 220V line and draws 2.5 A of current. What is the resistance of the oven when it is fully heated?​