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
Name the material which is the best conductor of electricity.
State how are the two resistors joined with a battery when equivalent resistance is more than either of the two resistances.
Calculate the equivalent resistance of the following combination of resistor r1, r2, r3, and r4

Write an expression for calculating electrical power in terms of current and resistance.
Two lamps of resistance 30Ω and 20Ω respectively are connected in series in a 110V circuit. Calculate:
(i) the total resistance in the circuit
(ii) the current in the circuit, and
(iii) the voltage drop across each lamp.
Calculate the quantity of heat that will be produced in a coil of resistance 75 Ω if a current of 2A is passed through it for 2 minutes.
What is the maximum resistance which can be made using five resistors each of `1/5` W?
If the current I through a resistor is increased by 100% (assume that temperature remains unchanged), the increase in power dissipated will be:
