a. What is the potential difference Vad in the circuit of Fig?
b. What is the terminal voltage of the 4.00-V battery?
c. A battery with emf 10.30z V and internal resistance 0.50 0 is inserted in the circuit at d, with its negative terminal connected to the negative terminal of the 8.00-V battery. What is the difference of potential Vbc between the terminals of the 4.00-V battery now?
