Question

a 75w and 50 w incandescent light bulbs are designed fot use with the same voltage. what is the ratio of the resistance of the 75- w bulb to the resistance of the 50 w bulb?

Answer 1

power= v^2/R

so power is inverely prop to resistance.

R75/R50=50/75

Answer 2

0.67

Answer 3

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