Dimensions of electric potential are
MLT-2 I-1
MLT-3 I-1
ML2T-3 I-1
ML2T-2 I-1
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
SI Unit of electric potential is
Watt
Volt
Coulomb / joules
Newton/ Coulomb
Two conducting spheres of radii 5cm and 3cm are charged so that the electric field on their surface are same. Calculate the ratio of the charges ?
3:5
5:3
9:25
25:9
With the discovery of quarks the basic unit of charge would be
(1/3)e
1e
(1/2)e
(2/3)e
When a sheet of glass is introduced between the two plates of a parallel plate capacitor, then which of the following quantities will increases?
Electric potential
The magnitude of the electric force
The electric intensity
The capacity of the capacitor
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
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
When a parallel plate capacitor is kept connected to a battery and the distance between the plates is increased.
Its capacity remains constant
Its charge remains constant
Its potential remains constant
Its energy remains constant
When two capacitors of capacitance C1 and C2 are connected in series their effective capacitance will be
C1+C2
C1C2/C1+C2
C1+C2/C1C2
C1 / C2