Advertisements
Advertisements
प्रश्न
State the S.I. unit of specific resistance.
उत्तर
The S.I. unit of specific resistance is ohm × metre or (Ωm).
संबंधित प्रश्न
Write any two characteristics of a series combination of resistors.
Name a substance of which the resistance remains almost unchanged by the increase in temperature.
When do you say that the resistors are connected in this way? Draw a circuit diagram.
What is a resistance? Define it with respect to Ohm’s law,
Six equal resistors of 1 ohm each are connected to form the sides of a hexagon ABCDEF. Calculate the resistance offered by the combination if the current enters at A and leaves it at D.
Two resistors having 2Ω and 3Ω resistance are connected—(i) in series, and (ii) in parallel. Find the equivalent resistance in each case.
Two wires of the same length and area made of two materials of resistivity ρ1 and ρ2 are connected in series to a source of potential V. The equivalent resistivity for the same area is:
If R1 and R2 be the resistance of the filament of 40 W and 60 W respectively operating 220 V, then: