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mote1985 [20]
4 years ago
11

An unknown resistance creates 2 amps of current when attached to a 30-volt power source. what is the size of the unknown resista

nce?
a. 0.07 ohms
b. 0.7 ohms
c. 15 ohms
d. 60 ohms
Physics
1 answer:
tangare [24]4 years ago
4 0
V=IR, V=30, I=2, algebra and tada, R=15
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Answer:

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Substituting the values:

\epsilon_{x_{1}}=\epsilon_{o}cos^{2}(-45)-2\epsilon_{o}sin^{2}(-45)+0\\\\\epsilon_{x_{1}}=\frac{\epsilon_{o}}{2}-2\frac{\epsilon_{o}}{2}\\\\\epsilon_{x_{1}}=-\frac{\epsilon_{o}}{2}

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