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प्रश्न
Draw the effective equivalent circuit of the circuit shown in figure, at very high frequencies and find the effective impedance.
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उत्तर
The element with infinite resistance will be considered as open circuit and the element with zero resistance will be considered as short-circuited.
In similar way, `X_C = 1/(2pivC)`
At high frequency, XC will be low.
So reactance of capacitance can be considered negligible and capacitor can be considered as short-circuited.
Here the above figure is equivalent circuit to given circuit.
Total impedance,Z = R1 + R3
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संबंधित प्रश्न
A group of students while coming from the school noticed a box marked "Danger H.T. 2200 V" at a substation in the main street. They did not understand the utility of a such a high voltage, while they argued, the supply was only 220 V. They asked their teacher this question the next day. The teacher thought it to be an important question and therefore explained to the whole class.
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