Electronics - Capacitors - Discussion
Discussion Forum : Capacitors - General Questions (Q.No. 1)
1.
In a 20 Vac series RC circuit, if 20 V is measured across the resistor and 40 V is measured across the capacitor, the applied voltage is:
Discussion:
37 comments Page 4 of 4.
Saurabh kumar said:
1 decade ago
Let us for suppose that an i current is flowed in to the circuit such that "the voltage developed across the series pair of resistance and capacitor is == I(R+jXc)
The voltage = IR + j(IXc) = voltage acc resistance + j(voltage acrosscapacitor)
= 20+j40
= sqrt(20*20 + 40 *40)
= 44.72
The voltage = IR + j(IXc) = voltage acc resistance + j(voltage acrosscapacitor)
= 20+j40
= sqrt(20*20 + 40 *40)
= 44.72
Aman Yadav said:
1 decade ago
A Very good ans by chandrasekar
Manveer said:
1 decade ago
Perfect Explanation by Chanfrasekar.
Vinayak m said:
1 decade ago
Vt= SQRT((20*20) + (40 *40)).
= SQRT(2025).
= 45.
= SQRT(2025).
= 45.
Priyanka said:
1 decade ago
Why are we doing sqrt ?
PETHURAJA said:
1 decade ago
Because there is a imaginary terms are there so we use squart.
Shiva said:
1 decade ago
(20 + j40).
To find the magnitude of the above expression:
Val = sqrt(20*20 + 40*40) = 44.7213 == 45.6.
To find the magnitude of the above expression:
Val = sqrt(20*20 + 40*40) = 44.7213 == 45.6.
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