MCAT Physics Question 76: Answer and Explanation
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Question: 76
1. If a defibrillator passes 15 A of current through a patient's body for 0.1 seconds, how much charge goes through the patient's skin?
- A. 0.15 C
- B. 1.5 C
- C. 15 C
- D. 150 C
Correct Answer: B
Explanation:
Electrical current is defined as charge flow, or in mathematical terms, charge transferred per time: 
A 15 A current that acts for 0.1 s will transfer 15 A × 0.1 s = 1.5 C of charge.