
1987B4. Three resistors are arranged in a circuit as shown above. The battery has an unknown but constant emf E and a negligible internal resistance.
a. Determine the equivalent resistance of the three resistors.
The current I in resistor R3 is 0.40 ampere.
b. Determine the emfE (Voltage) of the battery.
c. Determine the potential difference across resistor R1
d. Determine the power dissipated in resistor R1
e. Determine the amount of charge that passes through resistor R3 in one minute.