What is the resistance of a resistor if the potential difference across the resistor is 4.0 V when a current of 10.0 A flows through the resistor?

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Answer 1 · 2017-04-24T23:44:09

Power in the circuit= voltage x current 4 x10=-40 watts.

power= I^2 x R where r is resistance
so r= .40/10=O>4 ohms.
resistance is 0.4 ohms.

Answer 2 · 2017-04-25T13:31:20

#0.4# #Ω#

To find the potential difference, we use ohm's law which states that,

#color(blue)(V= I R#

Where, #V# is the potential difference across the conductor in Volts, #I# is the current in Amperes and #R# the resistance in Ohm

#rarr4=10xxR#

#rarrR=4/10#

#color(green)(rArrR=0.4# #color(green)(Ω#