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Sagot :
The power dissipated in the second case is 2W.
A resistor in a circuit with a voltage drop consumes electrical energy. All resistors have a power rating because this electrical energy is converted to heat energy. This is the maximum power that can be drawn from the resistor without burning out. Resistor energy dissipation. A charge q moves through a resistor, it loses potential energy Vq. where V is the potential drop across the resistor.
calculation:-
V = 1.5
power = 1
VI = P
I = 1/1.5
= 2/3
New V = 3 V
p = VI
= 3×2/3
= 2W.
This energy is dissipated as heat similar to how a ball of putty falling off a cliff converts potential energy into heat when it hits the ground. When current flows through a resistor, electrical energy is converted into heat energy. All heat generated by the components of a circuit has at least some resistance and is dissipated into the air surrounding the component.
Learn more about A resistor here:-https://brainly.com/question/24858512
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