A _______ is often used to cut holes to install outlet boxes in old installations.
1 answer:
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Answer:
Terminal voltage = 11.5 V
Power across load = 119.7 W
Power across internal resistance = 5.4 W
Power delivered by battery = 125.2 W
Explanation:
The current in the circuit is given by
where E is the emf of the battery, R us the load resistance and r is the internal resistance.
The terminal voltage is the potential difference across the load resistor.
V = I × R = 10.43 A × 1.1 Ω = 11.5 V
The power across any resistance is given by
For the load resistor,
For the internal resistance,
The power delivered by the battery is
This could also be found by
The discrepancy in both answers is due to the approximations. The second answer is better.