If `bar E = (3 hati +6 hat j+4 hat k)N/C`,calculate the elctric flux through a surface area `20cm^2` in Y-X plane .

If the electric filed is given by 6 hati + 3hat j+ 3 hat k calculate the electric flux through a surface area 20 units lying in y-z plane.

What is the net electric flux through a closed surface surrounding an electric dipole? Derive the expressions for electric field intesity both inside and outside a uniformly charged spherical cell. What is the total enclosed by a closed surface if the electric flux entering and leaving the surface are 20000N/Cm^2 and 30000N/C m^2 respectively.

An electron is moving with a velocity (3hati+3 hatj)ms^(-1) in an electric field 3hat i+6hat j+2hat k and a magnetic field 2hat j+3 hat k . Calculate the magnitude of the force.

Calculate the rate of loss heat through a glass window of area 1000sq.cm. and thickness 4mm when the temperature inside is 37°C and outside is 5°C ( K for glass =0.0022)

2m/copper wire of length applying force length increase by 1mm. If the energy of the wire is converted to heat energy, calculate the increasing temp^n of the wire.(Y= 12.5 × 10^10 N/m^2; ρ = 9 × 10^3 kg /m^3 ; s = 385 J/kg – K)