Question

In a region where intensity of electric field is 5 NC^-1, 40 lines of electric force are crossing per square metre. The number of lines crossing per square metre where intensity of electric field is 10 NC^-1 will be ______

Options

• 20

• 80

• 100

• 200

Answer 1

In a region where intensity of electric field is 5 NC^-1, 40 lines of electric force are crossing per square metre. The number of lines crossing per square metre where intensity of electric field is 10 NC^-1 will be 80.

Explanation:

Per unit area, electric lines of force cross. it's considered to be proportional to the magnitude of the electric field.