Question
Download Solution PDFFind the power p(t), supplied by the element when v(t) = 4 cos 3t V and
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFConcept:
Power supplied by a source is given by:
p(t) = v(t) × i(t)
v(t) is the voltage
i(t) is the current
Trigonometric Property:
sin 2θ = 2 sinθ cosθ
Calculation:
With v(t) = 4 cos 3t V and
Power supplied will be:
Multiplying both the numerator and denominator by 2, we get:
Using trig. property:
2 sin3t cos3t = sin 6t
∴ The power supplied will be:
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