Question

The power in an electric circuit varies inversely with the resistance. If the power is 1200 watts when the resistance is 12 Ohms, find the power when the resistance is 6 Ohms.

Answer 1

A taxi company charges riders a fixed charge of $2.30 plus $1.20 per mile. How many miles must a rider go to have an average cost per mile of $1.30?

Answer 2

First, if you have a question, it is much better to put it in as a separate post in <Post a New Question> rather than attaching it to a previous question, where it is more likely to be overlooked.

Let n= # miles

2.30 + 1.20n = 1.30n

Answer 3

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Answer 4

Indicate your <B>specific</B> subject in the "School Subject" box, so those with expertise in the area will respond to the question.

Answer 5

p = k/R
1200 = k/12
k = 14400
so
p = 14400/6
p = 2400 Watts

Answer 6

c = 1.2 m + 2.3
c/m = 1.2 + 2.3/m = 1.3
2.3/m = 0.1
m = 23 miles

Answer 7

when P=1200W , R=12Ù
the current is I^2=P/R=100 , I=10A
So the power P=? R=6Ù I=10A
P=I^2R= 100*6=600W