Advertisements
Advertisements
प्रश्न
How is the electric potential difference between the two points defined? State its S.I. unit.
Advertisements
उत्तर
The potential difference between two points is equal to the work done in moving a unit positive charge from one point to the other.
It's S.I. unit is Volt.
APPEARS IN
संबंधित प्रश्न
How much energy is given to each coulomb of charge passing through a 6 V battery?
You have three resistors of values 2Ω, 3Ω and 5Ω. How will you join them so that the total resistance is more than 7Ω?
1) Draw a diagram for the arrangement
2) Calculate the equivalent resistance.
Which of the following statements correctly defines a volt?
(a) a volt is a joule per ampere.
(b) a volt is a joule per coulomb.
What is meant by saying that the electric potential at a point is 1 volt?
The device used for measuring potential difference is known as:
If a potential difference of 10 V causes a current of 2 A to flow for 1 minute, how much energy is transferred?
A current of 1.6 mA flows through a conductor. If charge on an electron is –1.6 × 10-19 coulomb, find the number of electrons that will pass each second through the cross section of that conductor.
The V-I graph for a series combination and for a parallel combination of two resistors is shown in Fig – 8.38. Which of the two, A or B, represents the parallel combination? Give a reason for your answer.
What is the combined resistance of each of the networks between A and B shown in fig. ?
A cell of e.m.f 2.0 V and internal resistance 1Ω is connected to the resistors of 3Ω and 6Ω in series. Calculate:
(i) the current drawn from the cell,
(ii) the p.d. across each resistor,
(iii) the terminal voltage of the cell and
(iv) the voltage drop.
