If the electric field strength is 500 N/C at a point 2 cm from an infinite line of charge,the field will be 125 N/C at a point 4 cm from this line.

Question

Quizplus · Accepted Answer

The electric field due to an infinite line of charge is inversely proportional to the distance from the line, not inversely proportional to the square of the distance. Doubling the distance would halve the field strength, not reduce it to a quarter.

If the Electric Field Strength Is 500 N/C at a Point