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:
45 V
50 V
55 V
60 V
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
37 comments Page 1 of 4.

ABAR said:   6 years ago
Total voltage is V = square root of(Vc square +Vr square).

Gabbie said:   6 years ago
For series RC circuit, the formula is E= √(E resistive component^2 + E capacitive component^2)

E= √(20^2 + 40^2) = 44.72 V approx. 45 V.
The formula is from power triangle.
(4)

Raja said:   6 years ago
Hai,

How to calculate this? Anyone explain.
(1)

Nitish said:   6 years ago
What about Vac? Please explain.
(2)

GIFTY said:   8 years ago
45 is the correct answer.

Narasimha said:   8 years ago
What is Vac?
(1)

Vissu said:   9 years ago
What is Vac 20 in the question?

Please explain it.
(1)

Some one said:   9 years ago
@Anil.

V given is 20. So applied voltage is 20vac.

Karthik said:   9 years ago
Yeah! you are correct @Asif.

Mohammad asif said:   9 years ago
In ac circuit, the effective volatage is = sqrt of (vr * vr + vc * vc).


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