When a 12 V battery is connected across an unknown resistor , there is a current of 2.5 mA in a circuit. Find the value of the resistance of the resistor
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Answer:
potential difference = 12v
mampere = 2.5 mA = 2.5 x 10 ^3
resistance = potential difference / current
R =12 / 2.5 x 10^3 = 120000/ 25 = 4800 ohm
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