A cabin contains only two small electrical appliances: a radio that requires 10 milliamperes of current at 9.0 V, and a clock that requires 20 milliamperes at 15 V. A 15 V battery with negligible internal resistance supplies the electrical energy to operate the radio and clock

a. Complete the diagram below to show how the radio, clock and a single resistor R can be connected between points A and B so that the correct potential difference is applied across each appliance. Use the symbols at right to indicate the clock and radio. Show and explain your answer