(a) What is meant by the "resistance of a conductor"? Write the relation between resistance, potential difference and current.
(b) When a 12 V battery is connected across an unknown resistor, there is a current of 2.5 mA in the circuit. Calculate the value of the resistance of the resistor.

Open in App

Solution

a)
Resistance is defined as the property of a conductor to resist the flow of charges through it. The resistance of a conductor is numerically given as the ratio of the potential difference across its length to the current flowing through it.

b)
$R space equals space fraction numerator V over denominator I space end fraction space equals fraction numerator 12 over denominator 2.5 cross times 10 to the power of negative 3 end exponent end fraction equals space 4800 space capital omega$

Suggest Corrections

Similar questions

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.

Join BYJU'S Learning Program

(a) What is meant by the "resistance of a conductor"? Write the relation between resistance, potential difference and current. (b) When a 12 V battery is connected across an unknown resistor, there is a current of 2.5 mA in the circuit. Calculate the value of the resistance of the resistor.

a) Resistance is defined as the property of a conductor to resist the flow of charges through it. The resistance of a conductor is numerically given as the ratio of the potential difference across its length to the current flowing through it. b)

(a) What is meant by the "resistance of a conductor"? Write the relation between resistance, potential difference and current.
(b) When a 12 V battery is connected across an unknown resistor, there is a current of 2.5 mA in the circuit. Calculate the value of the resistance of the resistor.