Question

Which simple series circuit containing only a voltage source (Vs) and a resistive load (R) has...

Which simple series circuit containing only a voltage source (Vs) and a resistive load (R) has the largest power dissipation:

a) a circuit with a +10 V source in-series with a 100 Ω resistor
b) a circuit with a +15 V source in-series with a 200 Ω resistor
c) a circuit with a +20 V source in-series with a 300 Ω resistor
d) a circuit with a +25 V source in-series with a 400 Ω resistor

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Answer #1

option d) a circuit with 25 V source in series with a 400 ohn resistor has the largest power dissipation

V2/ R = 252/400=1.5625 watts

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