Advertisements
Advertisements
प्रश्न
Why are thick copper wires used as connecting wires?
Advertisements
उत्तर
The resistance of connecting wires should be almost negligible. For this thick wires are used . since a thicker wire has a small resistance and the wires are made of copper because the resistivity of copper is low.
संबंधित प्रश्न
Find the equivalent resistance between points A and B.
Find the equivalent resistance between points A and B
The substance having infinitely high electrical resistance is called:
(a) conductor
(b) resistor
(c) superconductor
(d) insulator
Name the material of wire used for making standard resistances. Give a reason.
How does the resistivity of a semiconductor depend on temperature?
Define the term resistivity and state its S.I. unit. Which will have higher resistivity a conductor or an insulator.
Calculate the equivalent resistance between P and Q from the following diagram:
Two resistors having 2Ω and 3Ω resistance are connected—(i) in series, and (ii) in parallel. Find the equivalent resistance in each case.
If R1 and R2 be the resistance of the filament of 40 W and 60 W respectively operating 220 V, then:
Two electric bulbs have resistances in the ratio 1 : 2. If they are joined in series, the energy consumed in them is in the ratio:
