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AshyT
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What happens to the power dissipated in a resistor when the voltage across it is changed?
AshyT said:What happens to the power dissipated in a resistor when the voltage across it is changed?
When the voltage applied to a resistor is AC (alternating current), the power dissipation varies with time. This means that the power dissipated in the resistor changes as the voltage changes.
Yes, the power dissipation in a resistor is directly proportional to the frequency of the voltage. This means that as the frequency increases, the power dissipated also increases.
The impedance of a resistor is the opposition it offers to the flow of current. In AC circuits, the impedance of a resistor plays a role in determining the power dissipation. A higher impedance will result in a higher power dissipation, while a lower impedance will result in a lower power dissipation.
Yes, there is a maximum power dissipation in a resistor for AC circuits. This maximum power dissipation is determined by the maximum voltage and current that the resistor can handle without exceeding its power rating.
The power dissipation in a resistor is directly related to its temperature. As the power dissipation increases, the temperature of the resistor also increases. It is important to keep the power dissipation within the recommended limits to prevent the resistor from overheating.