Resistance 80473

Determine the source voltage to which we must connect a 1k ohm resistance wire if a current of 40 mA is to flow through it.

Correct answer:

U =  40 V

Step-by-step explanation:

R=1000 1=1000 Ω I=40 mA A=40:1000  A=0.04 A  U=R I=1000 0.04=40 V

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