Physics
Physics
Problem
In a region where intensity of electric field is , 40 lines of electric force are crossing per square meter. The number of lines crossing per square meter where intensity of electric field is will be (1) 20 (2) 80 (3) 100 (4) 200Intuitive explanation
Electric field line density is directly proportional to field strength—this is the core relationship that connects the two quantities. Since the number of lines per unit area represents how tightly packed the field lines are, and field intensity measures the field's strength at that location, doubling the intensity means doubling the line density. Use this proportional relationship to find how many lines cross the second region.
Intuitive explanation
Electric field line density is directly proportional to field strength—this is the core relationship that connects the two quantities. Since the number of lines per unit area represents how tightly packed the field lines are, and field intensity measures the field's strength at that location, doubling the intensity means doubling the line density. Use this proportional relationship to find how many lines cross the second region.