Learning Goal: This problem aims to help you practice calculating power dissipation in different circuit elements. It will also give you insights into hơw power is conserved in a circuit. (a) Find the expressions of power dissipated by cach element in the cirecuit above. Remember to label voltage-current pairs using passive sign convention. (b) Use R= Sk£2, V, = sv, and /= SmA. Calculate the power dissipated by the voltage source (R;,), the current source (P), and the resistor (Pg). (e) Once again, let R == SkN, V, = 5V. What does the value / of the current source have to be such that the current source dissipates 40mW? Note that it is possible for a current source to dissipate power, ie. under passive sign convention, P, = 40mW. For this value of 1, compute P P), and Pg as well. As an aside: lf the current source were delivering power it would have been P = -40mW, under passive sign convention, but this is NOT what the question is asking about.

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Learning Goal: This problem aims to help you practice calculating power dissipation in different circuit
elements. It will also give you insights into how power is conserved in a circuit.
V,
(a) Find the expressions of power dissipated by cach element in the circuit above. Remember to label
voltage-current pairs using passive sign convention.
(b) Use R= 5k2, V, =5V, and I = 5mA. Calculate the power dissipated by the voltage source (R,), the
current source (P), and the resistor (Pk).
(c) Once again, let R=5k2, V, = 5V. What does the value / of the current source have to be such that the
current source dissipates 40mW? Note that it is possible for a current source to dissipate power, i.e.
under passive sign convention, P, = 40mW. For this value of 1, compute R,, P, and Pg as well.
As an aside: If the current source were delivering power it would have been P = -40mW, under
passive sign convention, but this is NOT what the question is asking about.
Transcribed Image Text:Learning Goal: This problem aims to help you practice calculating power dissipation in different circuit elements. It will also give you insights into how power is conserved in a circuit. V, (a) Find the expressions of power dissipated by cach element in the circuit above. Remember to label voltage-current pairs using passive sign convention. (b) Use R= 5k2, V, =5V, and I = 5mA. Calculate the power dissipated by the voltage source (R,), the current source (P), and the resistor (Pk). (c) Once again, let R=5k2, V, = 5V. What does the value / of the current source have to be such that the current source dissipates 40mW? Note that it is possible for a current source to dissipate power, i.e. under passive sign convention, P, = 40mW. For this value of 1, compute R,, P, and Pg as well. As an aside: If the current source were delivering power it would have been P = -40mW, under passive sign convention, but this is NOT what the question is asking about.
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