Advertisements
Advertisements
प्रश्न
How does the resistivity of an alloy such as constantace depends on temperature.
Advertisements
उत्तर
The resistivity of an alloy almost remains unaffected with change in tempeature.
संबंधित प्रश्न
An electrical appliance has a resistance of 25 Ω. When this electrical appliance is connected to a 230 V supply line, the current passing through it will be:
(a) 0.92 A
(b) 2.9 A
(c) 9.2 A
(d) 92 A
Name the material which is used for making the heating element of an electric iron.
How does the resistance of a wire change when:
its length is tripled?
A given metallic wire of resistance R is doubled on itself. What will be its new resistance?
How does the resistance of an alloy, vary with temperature?
Why are thick copper wires used as connecting wires?
State expression for Resistance connected in series.
Calculate the equivalent resistance between the points A and B for the following combination of resistors:
Two resistors of 4Ω and 6Ω are connected in parallel to a cell to draw 0.5 A current from the cell.
Draw a labelled circuit diagram showing the above arrangement.
Two resistors having 2Ω and 3Ω resistance are connected—(i) in series, and (ii) in parallel. Find the equivalent resistance in each case.
