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#44354 - 11/02/04 09:40 AM Another problem
AndyP Offline
Member
Registered: 08/11/04
Posts: 20
The resistance of a circuit is 35 Ohms. The input is 240V. What is the resulting amperage?

I get 6.8571428

WOuld it be just 6.86?
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#44355 - 11/02/04 10:00 AM Re: Another problem
pauluk Offline
Member
Registered: 08/11/01
Posts: 7520
Loc: Norfolk, England
Close enough for all practical purposes.

This assumes a purely resistive circuit. If it contains inductance and/or capacitance then the current will be affected by the reactance.

Also, in some cases the load resistance can change when power applied. If you measure the resistance of a heating element when cold for example, you could expect it to change a little once power starts flowing and it gets hot.
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