Question

Q.6. A 20 V storage battery of negligible internal resistance is connected across a 100 Ω resistor made of alloy manganin .How much current is developed and how much heat energy is produced in the resistor in 30 minutes ? What is the source of this energy ?​

Answer 1

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The heat energy produced in the resistor in 1 hour is given by

= R/V²×t= 50/10×10/×3600=7200J

Thus 7200 J of heat energy is produced.

Answer 2

Answer:

your answer is in the attachment