If W is the work done in moving a charge q from infinity to a point, then the potential at the point is
v = w/q
v = q/w
v = qw
v= Eqw
With the discovery of quarks the basic unit of charge would be
(1/3)e
1e
(1/2)e
(2/3)e
Electric potential at the equatorial point of a dipole is
1/4π∈0 P/r2
-1/4π∈0 P/r2
1/4π∈0 P/r
Zero
The supply of an additional charge to a charged capacitor will
Reduce its potential
Increase its potential
Reduce its capacity
Reduce the permittivity of the medium.
A copper slab of thickness d/2 is introduced between the plates of a parallel plate capacitor of plate separation d. If the capacitance of the capacitor without copper slab is c and with copper slab is c', then c '/c is
√2
2
1
1/√2
Two charged balls attract each other with a certain force.If they are allowed to touch and then separated to the same distance appart the two balls will
Attract with smaller force
Attract with greater force.
Repel with smaller force
Repel with greater force.
Two spherical conductors B and c of equal radii and carrying equal charge on them repel each other with a force F when kept apart at some distance.A third spherical conductor having some radius as that of B but uncharged is brought in contact with B and then with C and removed away from both.The new force of repulsion between B and C
F/4
3F/4
F/8
3F/8
Which of the following is a vector quantity?
Electric potential
Electric Intensity
Capacitance
Dielectric constant
Which of the following is a non polar dielectric ?
Hcl
NH3
H2O
O2
The electric potential V at a certain point distant x metre from the origin is given by V(x)= (5x2+10x-9) volt. The electric field at x=1m will be :
20 v/m
-10 v/m
10 v/m
-20v/m
