Question

Give me the summary of the chapter "Current electricity".

class 12th(physics chapter 2)​

Answer 1

The current, I flowing in a conductor I = dQ/dt ,where dQ is the charge that flows through a cross-section in a time interval dt. SI unit of current is ampere (A). The resistance of a material R = ρ l/A where l is length of the material and A is the area of cross section.