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tresset_1 [31]
3 years ago
13

The voltage V required for a circuit is given by

v=\sqrt{PR}" alt="v=\sqrt{PR}" align="absmiddle" class="latex-formula"> , where P is the power in watts and R is the resistance in ohms.
How many more volts are needed to light a 100-watt light bulb than a 75-watt light bulb if the resistance of both is 110 ohms? Round answer to the nearest tenth.
Mathematics
1 answer:
kondor19780726 [428]3 years ago
4 0

Answer:

✓11000-✓8250=~ 14 volts

Step-by-step explanation:

the answer is the difference by 100-watt light bulb to a 75 light bulb.

so, all you have to do is this:

v1-v2--------> ✓PR-✓P2R2

so you'll have ✓100.110-✓75.110= ✓11000-✓8250= 14

I hope it helps

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