Question

In a long coaxial cable, the electric field exists between the inner and outer conductors. What is the direction of the electric field?

A) Radially inward
B) Radially outward
C) Along the length of the cable
D) Perpendicular to the cable

Answer 1

The direction of the electric field in a long coaxial cable is radially inward.

Step-by-step explanation:

The direction of the electric field in a long coaxial cable is radially inward (option A). The electric field lines start from the positive charge and end at the negative charge. In a coaxial cable, the central conductor carries a positive charge, while the outer conductor carries a negative charge. Therefore, the electric field is directed radially inward, from the outer conductor towards the central conductor.