By increasing the temperature of conductor the flow rate of charge
The Correct Answer and Explanation is:
When the temperature of a conductor is increased, the flow rate of charge, or current, typically decreases. This is because the temperature rise increases the vibration of the atoms within the conductor, which in turn increases the resistance to the flow of electrons.
In most conductive materials, the electrical resistance increases with temperature. The reason for this is that as the temperature rises, the atoms in the conductor vibrate more vigorously. These vibrations create more collisions between the free-moving electrons (which carry the current) and the atoms or other particles in the conductor. Each collision impedes the flow of electrons, causing the resistance to increase.
As the resistance increases, the current (flow rate of charge) for a given applied voltage decreases. This relationship is described by Ohm’s Law, which states that current (I) is equal to the voltage (V) divided by the resistance (R). Therefore, if the resistance increases due to higher temperatures and the voltage remains constant, the current will decrease.
In some materials, such as metals, this effect is quite pronounced. However, certain other materials like semiconductors behave differently; for them, the current may actually increase with temperature due to an increase in the number of charge carriers. But for the majority of conductors, increasing temperature leads to a decrease in current flow.
Overall, the increase in resistance with temperature reduces the efficiency of electrical conduction, making it harder for charge to flow through the conductor. This is why devices that conduct electricity, like wires or circuits, tend to heat up when in use.
