If you know the potential difference delta V2, across R2, you can find the current I, through that resistor using Ohm's law. You can find Delta V2 by applying Kirchhofis loop law to the loop shown. Take the direction of the current to be the same as that of the loop. Write an equation for delta V2. Express your answer in terms of E and delta V1, where delta V1 is the magnitude of the potential difference across resitor R1.​