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When the voltage at both ends of a resistor increases from 2V to 2.8V, the current through the resistor increases by 0.1A, then the resistance value of the resistor is () A. 8 Ω B. 20 Ω C. 28 Ω D. cannot be determined
According to Ohm's law, the resistance of conductor is r = △ u △ I = 2.8V − 2v0.1a = 8 Ω
The resistance of a resistor is ()
What's the easiest way?
I - I' = U/R-U'/R = 8/R-2/R = 6/R=0.1
R = 60 Ω
When the voltage at both ends of a resistor increases from 2V to 2.8V, the current through the resistor increases by 0.1A, then the resistance value of the resistor is ()
A. 8 Ω B. 20 Ω C. 28 Ω D. cannot be determined
According to Ohm's law, the resistance of conductor is r = △ u △ I = 2.8V − 2v0.1a = 8 Ω
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