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When a 12 V Battery is Connected Across an Unknown Resistor Exercise Chapter 12 Electricity Science Class 10 NCERT

When a 12 V battery is connected across an unknown resistor Chapter 12: Electricity Science Class 10 solutions are developed for assisting understudies with working on their score and increase knowledge of the subjects. Q 8: 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. is solved by our expert teachers. You can get ncert solutions and notes for class 10 chapter 12 absolutely free. NCERT Solutions for class 10 Science Chapter 12: Electricity is very essencial for getting good marks in CBSE Board examinations

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Q 8: 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.
Ans:
We have potential difference (V) = 12V
Electric current (I)=2.5 mA= 2.4×10-3
According to Ohm’s Law (V) = IR Or  R = V/I 
$$R = {{12} over {2.5 imes {{10}^{ - 3}}}} = 4.8 imes {10^3}Omega $$

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