Question

On what factors does resistance depends

Answer 1

Dear student,
Resistance can be defined as the opposition to the flow of electron and electrical current through a conductor. mathematically can be written as;
$$\begin{gathered} R=\rho \frac{L}{A} \\ whereRisthersis\tan ce \\ \rho istheresistivitythatdependsonthematerialofthewire \\ Listhelengthofthewire \\ Aistheareaofcrosssectionofthewire \end{gathered}$$


The factors on which resistance of a conductor depends are ;

• Length (Resistance is directly proportional to length. For longer wire, resistance is high and for shorter wire resistance is low.)
• Thickness of the conductor (R is inversely proportional to Area, with thicker wire, resistance is less, and with thinner wire, resistance is large)
• Nature of material
• Temperature (with increasing temperature, resistance becomes high and with decreasing temperature, resistance becomes low)

Regards,