Given figure shows steady flow of current in a metallic conductor of non uniform cross - section. Current density depends inversely upon the area, so, J1> J2 as A1 < A2
When a current of 40 A flows through the conductor of area 10m2, what is the current density?
Answer & explanation
Correct answer: option 1
J = I / A
J : Current density
I : Current
A : Area of Cross Section