(10%) Problem 4: Consider an automobile battery that has an emf of 12.0 V and a terminal voltage of 15.0 V while a current of 9.5 A is charging it. m What is the internal resistance, r, in ohms, of the battery? r=| tanh() Deg1'ees O Radians Submit Hint BACKSI'ACE CLEAR Focdbac ' I give up! Hints: 5% deduction per hints Hints remaining: 3 Feedback: 0% deduction per feedback. Grade Summary Deductions 0 '7: Potential 100% Submissions Attempts remaining: (% per attempt) detailed view