Question

What is the angle between the electric field vectors at points A and B because of an infinitely long line charge as shown?

• A. ${30}^0$
• B. zero
• C. ${90}^0$
• D. can’t be determined

Answer 1

The correct option is B

zero

The electric field due to an infinitely long line of charge has a direction perpendicular to the line of charge. This is because the parallel components from both sides at a point will be equal and cancel out (as it is an infinitely long line charge)

So the angle between the directions of the two electric fields would be zero