(i) Starting from the relations and , derive a formula linking the electric field…

PHYSICS · Multi-part · A Level · Physics · Electricity · Electricity

Problem

(i) Starting from the relations

I = n e A v_d

and

v_d = \mu E

, derive a formula linking the electric field

E

inside a conductor with the current density

J

. (a) Starting from the relations

I = n e A v_d

and

v_d = \mu E

, derive a formula linking the electric field

E

inside a conductor with the current density

J

. (b) Hence, identify the physical quantity represented by the slope of an

E

versus

J

graph for the conductor.