Electricity – Class X CBSE

Some important points to remember The resistance of a conductor does not change when the current through it is changed or the voltage across it is changed. When current is changed, the voltage across it is also changed so that the ratio V/I = R The value of resistance changes if the dimensions (length or … Continue reading Electricity – Class X CBSE

Resistance and Resistivity

Simran Asked "Two wires A and B of equal lengths,different cross-sectional areas and made of same metal a)name the property which is same for both the wires. b)name the property which is different for both the wires" Answer: Since both the wires are of same metal, the resistivity will be same for both whereas since … Continue reading Resistance and Resistivity