*
Solid angle is a measure of a cone Consider the intersection of the given cone
with a sphere of radius R The solid angle DW of the cone is defined to be equal
to DS/R
2, where DS is the area on the sphere cut out by the cone Rationalised 2023-24
Electric Charges
and Fields
21
a curve drawn in such a way that the tangent to it at each
point is in the direction of the net field at that point