12.2 Problems
549
Fig. 12.23
12.49 A battery with emf ξ = 24 V has internal resistance r = 0.02 . A load
resistor R = 140 is connected to the terminals of a battery:
(i) Find the current flowing in the circuit under load conditions.
(ii) Find the terminal voltage of the battery under load conditions.
(iii) Find the power dissipated in the resistor R and in the battery’s internal
resistance r .
(iv) Find the open circuit voltage of the battery under no load conditions
and explain your answer.
12.50 Figure 12.24 shows a series parallel resistive circuit connected to a dc supply.
(i) Find the total equivalent resistance of the circuit.
(ii) Find currents I T , I 1 and I 3 .
(iii) Find voltages V 1 , V 2 and V 3 .
(iv) Find power dissipated in resistor R 5 and the total power dissipated in
the circuit.
Fig. 12.24
549
Fig. 12.23
12.49 A battery with emf ξ = 24 V has internal resistance r = 0.02 . A load
resistor R = 140 is connected to the terminals of a battery:
(i) Find the current flowing in the circuit under load conditions.
(ii) Find the terminal voltage of the battery under load conditions.
(iii) Find the power dissipated in the resistor R and in the battery’s internal
resistance r .
(iv) Find the open circuit voltage of the battery under no load conditions
and explain your answer.
12.50 Figure 12.24 shows a series parallel resistive circuit connected to a dc supply.
(i) Find the total equivalent resistance of the circuit.
(ii) Find currents I T , I 1 and I 3 .
(iii) Find voltages V 1 , V 2 and V 3 .
(iv) Find power dissipated in resistor R 5 and the total power dissipated in
the circuit.
Fig. 12.24