As a member of the safety group for the space shuttle scientific program, you have been asked to evaluate an electronics design change. In order to improve the reliability of a circuit to be used in the next shuttle flight, the experimental design team has suggested adding a second 12 V battery to the circuit. The equivalent resistances of the proposed design are shown below. You are worried about the heat generated by the device with the 20 ohm resistance since it will be located next to a sensitive low temperature experiment so you do the appropriate calculation for the power.