## Questions 11-12
The above circuit diagram shows a battery with an internal resistance of 4.0 ohms connected to a 16-ohm and a 20 -ohm resistor in series. The current in the 20 -ohm resistor is 0.3 amperes
11. What is the emf of the battery?
(A) 1.2 V
(B) 6.0 V
(C) 10.8 V
(D) 12.0 V