In This Circuit, the Batteries Have Negligible Internal Resistance and the Ammeter

question 1

Multiple Choice

In this circuit, the batteries have negligible internal resistance and the ammeter A, used to measure current, has negligible resistance. The energy delivered by the 18-V battery in 4 s is approximately

• A) 30 J.
• B) 45 J.
• C) 72 J.
• D) 141 J.
• E) 163 J.

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