Advertisements
Advertisements
प्रश्न
What do you understand by the resistance of a wire?
Advertisements
उत्तर
The obstruction offered in the flow of electrons (or current) by the material of the wire, is called its resistance.
APPEARS IN
संबंधित प्रश्न
State the relation between potential difference, work done and charge moved.
The unit for measuring potential difference is:
If a potential difference of 10 V causes a current of 2 A to flow for 1 minute, how much energy is transferred?
Name the law which relates the current in a conductor to the potential difference across its ends.
Calculate the power used in the 2 Ω resistor in each of the following circuits: a 4 V battery in parallel with 12 Ω and 2 Ω resistors.
If the potential difference between the ends of a fixed resistor is halved, the electric power will become:
A V-I graph for a nichrome wire is given below. What do you infer from this graph? Draw a labelled circuit diagram to obtain such a graph.
A 10 m long wire of a particular material is of reistance 5Ω What will be the resistance of 5m long wire of same material and the same thickness.
If P and V are the power and potential of device, the power consumed with a supply potential V1 is:
Two charged spherical conductors of radius R1 and R2 are connected by a wire. Then the ratio of surface charge densities of the spheres `(σ_1//σ_2 )` is ______.
