A negative charged particle is released from rest in a uniform electric field. The electric potential energy of charge
Remains constant because of uniform electric field
Increases because charge moves opposite to electric field
Decreases because charge moves against electric field
Decreases because charge will move along electric field
A parallel plate capacitor has plates with area $A$ and separation $d$. A battery charges the plates to a potential difference $V_0$. The battery is then disconnected and a dielectric slab of thickness $d$ is introduced. The ratio of energy stored in the capacitor before and after slab is introduced, is
Find flux related to shaded face $BCGF$
Two identical charged spherical drops each of capacitance $C$ merge to form a single drop. The resultant capacitance
A spherical shell with an inner radius $'a'$ and an outer radius $'b'$ is made of conducting material. A point charge $+Q$ is placed at the centre of the spherical shell and a total charge $-q$ is placed on the shell. Final charge distribution on the surfaces as
Two point charges $+8q$ and $-2q$ are located at $x = 0$ and $x = L$ respectively. The location of a point on the $x-$ axis at which net electric field due to these two point charges is zero, is