A 10-V Battery Is Connected to a 15-Ω Resistor and an Unknown

question 72

Multiple Choice

A 10-V battery is connected to a 15-Ω resistor and an unknown resistor R, as shown. The current in the circuit is 0.40 A. How much heat is produced in the 15-Ω resistor in 2.0 min?

• A) 0.40 kJ
• B) 0.19 kJ
• C) 0.29 kJ
• D) 0.72 kJ
• E) 0.80 kJ

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