If the electric field strength produced by a point charge is 1000 N/C at 5.0 cm from this charge,the strength will be 25,000 N/C at a point 1.0 cm closer to this charge.

Question

Quizplus · Accepted Answer

The strength of electric field produced by a point charge is inversely proportional to the square of the distance from the point charge. If the electric field strength produced by a point charge is 1000 N/C at 5.0 cm from this charge, then at a point 1.0 cm closer, the distance would be 4.0 cm. Using the inverse square law, we can calculate the electric field strength as follows:

E1/E2 = (r2/r1)^2
E1/25000 = (4/5)^2
E1 = 1250 N/C

Therefore, the strength of the electric field at a point 1.0 cm closer to the point charge would be 1250 N/C, not 25,000 N/C. So the statement is false.

If the Electric Field Strength Produced by a Point Charge