What determines: a. The current through an ideal voltage source? b. The voltage across an ideal current source?
What will be an ideal response?
Known quantities:
Resistance of external circuit.
Find:
a) Current supplied by an ideal voltage source
b) Voltage supplied by an ideal current source.
Assumptions:
Ideal voltage and current sources.
Analysis:
a) An ideal voltage source produces a constant voltage at or below its rated current. Current is determined by the power required by the external circuit (modeled as R).
b) An ideal current source produces a constant current at or below its rated voltage. Voltage is determined by the power demanded by the external circuit (modeled as R).
A real source will overheat and, perhaps, burn up if its rated power is exceeded.
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What will be an ideal response?
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