SOLUTION: The current I in an electrical conductor varies inversely as the resistance R of the conductor. The current is 1/5 ampere when the resistance is 21875 ohms. What is the current wh

Question 1000199: The current I in an electrical conductor varies inversely as the resistance R of the conductor. The current is 1/5 ampere when the resistance is 21875 ohms. What is the current when the resistance is 42875 ohms?
Answer by ikleyn(52787) (Show Source): You can put this solution on YOUR website!
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The current I in an electrical conductor varies inversely as the resistance R of the conductor. The current is 1/5 ampere when the resistance is 21875 ohms. What is the current when the resistance is 42875 ohms?
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The condition states that I = , where U = const. (By the way, physically U is electric potential difference across the resistance).

In other words, the product I*R is the constant value U.

Therefore, you have an equation

. = *.

where x is the unknown current. Hence,

x = ampere.

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