SOLUTION: Can anyone help with a electricity question? The current (I) in an electrical conductor varies inversely to the resistance (R) of the conductor. If the current is 1/2 ampere when

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Question 1034121: Can anyone help with a electricity question? The current (I) in an electrical conductor varies inversely to the resistance (R) of the conductor. If the current is 1/2 ampere when the resistance is 240 ohms, what is the current when the resistance is 540 ohms?
Answer by ikleyn(52781)   (Show Source): You can put this solution on YOUR website!
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Can anyone help with a electricity question? The current (I) in an electrical conductor varies inversely to the resistance (R) of the conductor.
If the current is 1/2 ampere when the resistance is 240 ohms, what is the current when the resistance is 540 ohms?
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"... The current (I) in an electrical conductor varies inversely to the resistance (R) of the conductor."


It means that I = ,    (1)

where k is a proportionality coefficient.


You are given that ". . . If the current is 1/2 ampere when the resistance is 240 ohms".


It means  = .   (2)  (I simply substituted the data into (1))

From (2), the proportionality coefficient k is k =  = 120.


Now to answer the question, you simply need to substitute this k = 120 and R = 540 into (1). You will get


I = 120/540.


How much is it?


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