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timurjin [86]
3 years ago
12

Which type of light bulb uses more power, a 100 w light bulb or a 50 w light bulb

Physics
2 answers:
bearhunter [10]3 years ago
8 0
Power denotes the amount of energy consumed in a second. Assuming these bulbs are used for the same time period, a 100W bulb consumes 100 joules per second and a 50W bulb consumes 50 joules per second. So, a 100W bulb will use more power.
Aleksandr [31]3 years ago
6 0
Watts are the units for power. If a light bulb requires 100 Watts, then that light bulb requires more power than a 50 Watt light bulb.
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At what distance will a 45 W lightbulb have the same apparent brightness as a 130 W bulb viewed from a distance of 35 m ? (Assum
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Answer:

20.6 m

Explanation:

P₁ = Power of first bulb = 45 W

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Using the equation

\frac{P_{1}}{r_{1}^{2}} = \frac{P_{2}}{r_{2}^{2}}

Inserting the values

\frac{45}{r_{1}^{2}} = \frac{130}{35^{2}}

r₁ = 20.6 m

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