R2 P2 = 0.75 W P=2W 200 mA
what is the Power in the problem and how to solve it
The power across an element is equal to the product of the voltage across the element and the current flowing through the element. So, the power across an element is given by:
Where,
The voltage across element is “V”,
The current across the element is “I”.
The total power in the resistive circuit is supplied by the voltage source and the current delivered by voltage source is the total current which is 200 mA. To calculate the voltage of the voltage source, use the power equation:
The voltage across both the resistor R1 and R2 is equal to the voltage supplied by the voltage source because the voltage source, resistor R1 and resistor R2 are connected in parallel. To, calculate the current in resistor R2, use the power equation:
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