ELECTROSTATICS...COULOMBS LAW ..NUMERICALS ..PART -13

Consider the three statements in context of electrostatic field lines. STATEMENT-1 : Electrostatic field lines are continuous curves in space. STATEMENTS-2 : Electrostatic field lines are always perpendicular to equipotential surface. STATEMENT-3 : A charge when released in electrostatic field moves along electrostatic field lines.

STATEMENT-1 : The electrostatic force is much stronger than the gravitational force. STATEMENT-2 : Electrostatic force can be attractive or repulsive. STATEMENT-3 : Electrostatic force is central force.

Write the Roman numerals for : 63

Write Coulomb.s law in vector form.

Let A=[(1,2),(-1,3)] .If A^6=kA-205I then then numerical quantity of k-40 should be

A: Total charge on N_(A) ions of CO_(3)^(2-) is 1.93 xx 10^(5) coulomb. R : Charge on one electron is 96500 coulomb.

Define Numerical Taxonomy

In optical fibre, refractive index of inner part is 1.68 and refractive index of outer part is 1.44. The numerical aperture of the fibre is

Identify, in the following expressions, terms which are not constants. Give their numerical coefficients: xy+4, 13-y^2, 13-y+5y^2, 4p^2 q-3pq^2+5