since the elecronics are moving under the influence of a constant force should be accelerated to higher and higher velocities their motion should contiued ecen after we switch off the electric field kepping the circuit complete as already told it does not happen the speed of the electrons does not increase continousely and the current stop as soon as the electric field is switched off.
thus the eletrons of a conductor during their motion face opposition to their free flow similar in many respect to meachanical friction is diffrent for diffrent material it also changes with the size of the conductor
CAUSE OF RESISTANCE:-
When a potential difference is applied across a conductor as electric field is set up across its two ends when it is free electrons gets accelerated during their motion. The motion opposed the opposition offered by the atoms as a result of which the electrons are showed down is termed as the resistance of the conductor. Thus resistance is the opposition to the flow of current through a conductor
LAWS OF RESISTANCE:-
• Varies directly as the length of the conductor • It is inversely proportional to the area of cross section • It depends upon the nature of material of the conductor
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