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Solved: Lightbulb A is rated at 120 V and 40 W for
Chapter 16, Problem 79GP(choose chapter or problem)
Lightbulb A is rated at 120 V and 40 W for household applications. Lightbulb B is rated at 12 V and 40 W for automotive applications, (a) What is the current through each bulb? (b) What is the resistance of each bulb? (c) In one hour, how much charge passes through each bulb? (d) In one hour, how much energy does each bulb use? (e) Which bulb requires larger diameter wires to connect its power source and the bulb?
Questions & Answers
QUESTION:
Lightbulb A is rated at 120 V and 40 W for household applications. Lightbulb B is rated at 12 V and 40 W for automotive applications, (a) What is the current through each bulb? (b) What is the resistance of each bulb? (c) In one hour, how much charge passes through each bulb? (d) In one hour, how much energy does each bulb use? (e) Which bulb requires larger diameter wires to connect its power source and the bulb?
ANSWER:Step-by-step solution
Step 1 of 9
- The voltage rating is for A:
The power rating is:
The voltage rating for B is:
The current through bulb A is:
The current is 0.33 A.