If the electric field is given by E=8i+4j+3k N/c.calculate the electric flux through a surface of area 100 metre square in the x-y plane.

Dear student

 

electric flux = E. A

A = Area perpendicular

flux = (8i + 4j + 3k) . (100k)

= 300 units

 

Regards

Arun (askIITians forum expert)

Area vetor has direction in z axis

So A = 100

THen flux = E.A = 300 Nm²/C

Hope it clears.

Area vector for the given electric field is in z axis because  it lies in xy plane

Therefore as per the formula flux=E.A

                                                           =E(3)×A(100)

                                                    Flux=300

The electric field on a certain region is given by (5i+4j-4k)*10 to the power -5 newton per coulomb calculate the eletric flux due to this field over an area of(2i-j) *10tothe power -5 meter square

Hello student

The electric flux is the dot product of Electric field and the surface area

or, flux = E.A

Now, area is in x-y plane, therefore, A = 100k

And Electric field is, E = 8i + 4j + 3k

Hence, flux = (8i + 4j + 3k).(100k)

                  = 300 Vm

 

Hope it helps

Regards,

Kushagra