Advertisements
Advertisements
प्रश्न
What is meant by saying that the electric potential at a point is 1 volt?
उत्तर
When we say that the electric potential at a point is 1 volt, it means that 1 joule of work has been done in moving 1 coulomb of positive charge from infinity to that point.
APPEARS IN
संबंधित प्रश्न
Name a device that helps to maintain a potential difference across a conductor.
The unit for measuring potential difference is:
What is Ohm's law? Explain how it is used to define the unit of resistance.
Write down the formula which states the relation between potential difference, current, and resistance.
For the circuit shown in the diagram below:
What is the value of:
(i) current through 6 Ω resistor?
(ii) potential difference across 12 Ω resistor?
What is the combined resistance of each of the networks between A and B shown in fig. ?
Three resistors are connected to a 6 V battery as shown in the figure given below:
Calculate:
(i) the equivalent resistance of the circuit.
(ii) total current in the circuit.
(iii) potential difference across the 7.2 Ω resistor.
In the figure given below, A, B and C are three ammeters. The ammeter B reads 0.5A. (All the ammeters have negligible resistance.)
Calculate:
(i) the readings in the ammeters A and C.
(ii) the total resistance of the circuit.
A current of 100 mA. flows through a wire. The charge on an electron is 1.6 × 10-19 C. Find the number of electrons passing per second through the cross-section of the conductor.
If P and V are the power and potential of device, the power consumed with a supply potential V1 is:
