State your own interpretation of Thvenins theorem and use it to solve the following problem. Two batteries are connected in parallel. The e.m.f. and internal resistance of one battery are 120 V and Exercises 4 continued 10 respectively and the corresponding values for the other are 150 V and 20 . A resistor of 50 is connected across the battery terminals. Calculate (a) the current through the 50 resistor, and (b) the value and direction of the current through each battery. If the 50 resistor were reduced to 20 resistance, find the new current through it.