Physics Test 75...

In isolated parallel plate capacitor of capacitance C, the plates have charges Q₁ and Q₂. The potential difference between the plates is :

C, V, U and Q are capacitance, potential difference energy stored and charge of parallel plate capacitor respectively. The quantities that increases when a dielectric slab is introduced between the plates without disconnecting the battery are :

Two conducting sphere of radii r₁ and r₂ having charges Q₁ and Q₂ respectively are connected each other. There is :

In the figure shown, the capacitor of the capacity C is 2μF. The current in 2Ω resistor is :

The capacitance of system is C. If key is closed the total energy loss is equal to :

A condenser of capacity C₁ is charged to a potential V₀. The electrostatic energy stored in it is U₀. It is connected to another uncharged capacitor C₂ in parallel. The energy dissipated in the process is :

Potential of the point P is :

Equivalent capacitance between A and B in the given diagram is :

If the two plates of the charged capacitor are connected by a wire, than

The equivalent capacitance between A and B of the combination shown in the figure is :