When a 12 V battery is connected across an unknown resistor, there is a current of
2.5 mA in the circuit. Find the value of the resistance of the resistor
2.5 mA in the circuit. Find the value of the resistance of the resistor
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Answer:
4.8 k ohms
Explanation:
Potential difference: V = 12v
Current = I = 2.5 mA
= 2.5 * 10(to the power -3) A
Resistance
Ohm's law
V = IR
V/I = R
R = V/I
R = 12/2.5*10(to the power -3)
= 12*10(to the power -3)/25*10
= 12*10/25*10(to the power -3)
= 12*2/5*10(to the power -3)
= R = 24/5*10(to the power -3)
= R = 4.8*10(to the power -3)Ohms
R = 4.8kohms
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