(a) E=0
(b)
E=k•2λ/r =9•10⁹•2•36•10⁻⁹/0.135=4800 N/C
(c)
E=k•2λ/r =9•10⁹•2•36•10⁻⁹/1.25=518.4 N/C
A long, straight metal rod has a radius of 6.00 cm and a charge per unit length of 36.0 nC/m. Find the electric field at the following distances from the axis of the rod, where distances are measured perpendicular to the rod.
(a) 1.50 cm
N/C (direction)
(b) 13.5 cm
N/C (direction)
(c) 125 cm
N/C (direction)
1 answer
1 answer