Chapter 7: Electrostatics, Dielectrics & Current Electricity (Set-4)

In electrostatics, the curl of electric field equals

The electric field between large parallel plates (ignoring edges) is

In Poisson’s equation, the Laplacian of potential equals

Polarization in dielectric is strongest when

Capacitors in parallel add because

The D field includes

Dielectric constant <1 is possible in

Ohm’s law in vector form

Resistivity of insulator is

Surface charge density on conductor creates

Potential of uniformly charged ring on axis

If ∇²V > 0 at a point, charge density is

In a dielectric, electric field is reduced due to

Capacitance of parallel plates varies inversely with

Potential of dipole at large distance is proportional to

A conductor is

Mobility relates

For spherical Gaussian surface, E-field depends on

Induced dipoles in dielectrics are

In conductor, current density proportional to

Charge in Gaussian surface affects field

Potential difference is path independent because

Dielectric strength refers to

The E-field inside ideal dipole at center is

Resistivity depends on

Laplace equation holds for

For conductor surface, tangential E is

Capacitance is property of

Dielectric constant of vacuum is

A polarization vector opposite to E-field means

If D = 0 everywhere, then

Unit of electric displacement D

Capacitance of spherical capacitor increases if

Drift velocity increases with

Total electric flux through closed surface depends on

Capacitance increases when

In linear dielectric, P is

Ohmic heating power is

Relaxation time is

A dielectric becomes conductor on

Resistivity of semiconductor decreases when

D-field is normal to

Potential due to point charge decreases as

Electric field lines start from

If σ = 0, the material is

A strong dielectric reduces

Conduction current exists in

In electrostatics, magnetic field is

Joule heating greatest when

A dielectric increases capacitance because