Advertisements
Advertisements
प्रश्न
A charge of 20 µC is placed on the positive plate of an isolated parallel-plate capacitor of capacitance 10 µF. Calculate the potential difference developed between the plates.
उत्तर
Given :
Capacitance of the isolated capacitor = 10 µF
Charge on the positive plate = 20 µC
Effective charge on the capacitor = `(20-0)/2 = 10 "uC"`
The potential difference between the plates of the capacitor is given by `V = Q/C`
`therefore "Potential difference" = (10 "uC")/(10 "uF")`= `1 "V"`
APPEARS IN
संबंधित प्रश्न
Define 1 volt PD.
Distinguish between Conductors and Insulators.
The potential difference applied across a given resistor is altered so that the heat produced per second increases by a factor of 9. By what factor does the applied potential difference change?
In the figure shown, an ammeter A and a resistor of 4 Ω are connected to the terminals of the source. The emf of the source is 12 V having an internal resistance of 2 Ω. Calculate the voltmeter and ammeter readings.
In the circuit diagram given below, AB is a uniform wire of resistance 15 Ω and length 1 m. It is connected to a cell E1 of emf 2V and negligible internal resistance and a resistance R. The balance point with another cell E2 of emf 75 mV is found at 30 cm from end A. Calculate the value of R.
Is there any restriction on the upper limit of the high voltage set up in Van de Graff generator machine? Explain.
The figure shows a plot of three curves a, b, c, showing the variation of photocurrent vs collector plate potential for three different intensities I1, I2and I3 having frequencies v1, v2 and v3 respectively incident of a photosensitive surface.
Point out the two curves for which the incident radiations have same frequency but different intensities.
Both the capacitors shown in figure are made of square plates of edge a. The separations between the plates of the capacitors are d1 and d2 as shown in the figure. A potential difference V is applied between the points a and b. An electron is projected between the plates of the upper capacitor along the central line. With what minimum speed should the electron be projected so that it does not collide with any plate? Consider only the electric forces.
A charge of 1 µC is given to one plate of a parallel-plate capacitor of capacitance 0⋅1 µF and a charge of 2 µC is given to the other plate. Find the potential difference developed between the plates.
The capacitance between the adjacent plates shown in the figure is 50 nF. A charge of 1.0µC is placed on the middle plate. If 1.0 µC is placed on the upper plate instead of the middle, what will be the potential difference between (a) the upper and the middle plates and (b) the middle and the lower plates?
Answer the following question:
Find the expression for the resistivity of a material.
In circuits, a difference in potential from one point to another is often called ______.
On moving a charge of Q coulomb by X cm, W J of work is done, then the potential difference between the points is ______.
A and B are two points in an electric field. If the work done in carrying 4.0C of electric charge from A to B is 16.0 J, the potential difference between A and B is:
An α-particle and a proton are accelerate at same potential difference from rest. What will be the ratio of their final velocity?
A bullet of mass of 2 g is having a charge of 2 µc. Through what potential difference must it be accelerated, starting from rest, to acquire a speed of 10 m/s.
Work done in moving a unit positive charge through a distance of x meter on an equipotential surface is:-
Can there be a potential difference between two adjacent conductors carrying the same charge?