The dimensions of capacitance are
M-1 L-2 T2 I2
M-1 L-1 T2 I2
M-1 L-2 T3 I2
M-1 L-2 T4 I2
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.
SI Unit of electric potential is
Watt
Volt
Coulomb / joules
Newton/ Coulomb
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
A charge q1 exert some force on another charge q2.If a third charge q3 is brought near q1 the force exerted by q1 on q2 is equal to ?
decreases
remains unchanged
increases
increases exponentially
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
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.
Which of the following will not alter the capacitance of a parallel plate capacitor ?
Change is the area of the plates
Change is the distance between the plates
Change is the dielectric medium
Change is the charging potential
The energy acquired when an alpha particles is accelerated through a potential difference of 1 volt is :
1 ev
2 ev
4 ev
0
