In some old texts it is mentioned that `4pi` lines of force
. orginate form each unit positive charge. Comement on
. the statement in view of the fact that `4pi` is not an
. interger.

Find the Slope of a line whose inclination to the positive direction of X-axis is anticlockwise sense is -pi/4

Find the Slope of a line whose inclination to the positive direction of X-axis is anticlockwise sense is (3pi)/4

Two point charges +4 esu and +9 esu are placed 10 cm apart. At what point on the line joining them will a unit positive charge experience (i) an equal but opposite and (ii) an equal and unidirectional force?

A conductor of capacity 4 units, charged with 100 units of positive charge is connected to another conductor of capacity 2 units, charged with 20 units of negative charge. What is the change in potential of each conductor ? What will be the charges of each of them after connection?

A conductor of capacity 4 units, charged with 100 units of positive charge is connected to another conductor of capacity 2 units, charged with 20 units of negative charge. What is the change in potential of each conductor ? What will be the charges of each of them after connection?

Use Euclid division Lemma to show that any positive even interger is of the form 4q or 4q+2 or 4q+4 when q is some integer.

Use Euclid division lemma to show that any positive even integer is of the form 6q or 6q+2 or 6q+4, where q is some intergers.