Two 100 watt light bulbs rated at 100 volts...

Question 1 / 205eccefa3bacbc34ba4d47f38

Question 1 of 205eccefa3bacbc34ba4d47f38

Two 100 watt light bulbs rated at 100 volts are connected in parallel across a 100 volt power supply. What will be the total power consumed by the two bulbs?

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Question 1 of 20

5eccefa3bacbc34ba4d47f38

Two 100 watt light bulbs rated at 100 volts are connected in parallel across a 100 volt power supply. What will be the total power consumed by the two bulbs?

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🔍 Key Concepts

• Parallel circuits and what stays the same for each branch • Relationship between power, voltage, and resistance (P = V × I and P = V² / R) • How ratings on a bulb (watts and volts) describe its behavior at that voltage

💭 Think About

• For one bulb rated 100 W at 100 V, what current does it draw when operating at its rated voltage? • In a parallel circuit across 100 V, what voltage does each bulb actually receive? • If each bulb operates at its rated conditions, how do you combine their individual powers to get the total power?

✅ Before You Answer

• Confirm that in parallel the voltage across each bulb is the full supply voltage • Calculate the current for one bulb from its rating and then its power at 100 V • Decide whether powers in separate parallel branches should be added, averaged, or something else to find total power

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Question 1 of 20

Two 100 watt light bulbs rated at 100 volts are connected in parallel across a 100 volt power supply. What will be the total power consumed by the two bulbs?

50 watts

66.7 watts

100 watts

200 watts

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