The energy acquired when an alpha particles is accelerated through a potential difference of 1 volt is :
1 ev
2 ev
4 ev
0
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
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
SI Unit of electric potential is
Watt
Volt
Coulomb / joules
Newton/ Coulomb
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
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.
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
If the distance between the plates of a charged parallel plate capacitor is reduced to half of its original value, the capacity of the capacitor is
Increased two times
Reduced to half of its original value
Increased to 4 times
Remains unaltered
With the discovery of quarks the basic unit of charge would be
(1/3)e
1e
(1/2)e
(2/3)e
Which of the following is a non polar dielectric ?
Hcl
NH3
H2O
O2
