MCQ
In the circuit shown in fig., the resonant frequency is.
- A200Hz
- B220Hz
- C225.08Hz
- D230Hz
✓
Answer
- 225.08Hz
Explanation:
The resonant frequecy of a circuit is given by $\text{f}=\frac{1}{2\pi\sqrt{\text{LC}}}$
Given $\text{L}=0.1\text{H }\text{C}=5\mu\text{F }\text{R}=5\Omega$
Substituting them in formula for f gives
f = 225.08 Hz.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
Our eye is most sensitive for which of the following wavelength
|
(a) 4500 Å |
|
(b) 5500 Å |
|
(c) 6500 Å |
|
(d) Equally sensitive for all wave lengths of visible spectrum |
The primary origin(s) of magnetism lies in:
The electron in the beam of a television tube move horizontally from south to north. The vertical component of the earth's magnetic field points down. The electron is deflected towards
|
(a) West |
(b) No deflection |
(c) East |
(d) North to south |
Two coils P and Q are lying parallels and very close to each other. Coil P is connected to an AC source whereas Q is connected to a sensitive galvanometer. On pressing key K.
Figure shows a closed surface which intersects a conducting sphere. If a positive charged is placed at the point P, the flux of the electic field through the closed surface:
What will be the equivalent resistance between the two points A and D
|
(a) 10 Ω |
(b) 20 Ω |
(c) 30 Ω |
(d) 40 Ω |
A solid conducting sphere of radius R1 is surrounded by another concentric hollow conducting sphere of radius R2. The capacitance of this assembly is proportional to
|
(a) |
(b) |
(c) |
(d) |
The length of a metal wire is l1 when the tension in it T1 and is l2 when the tension is T2. The natural length of the wire is:
→-
$\frac{\text{l}_1+\text{l}_2}{2}$
-
$\sqrt{\text{l}_2\text{l}_2}$
-
$\frac{\text{l}_1\text{T}_2-\text{l}_2\text{T}_1}{\text{T}_2-\text{T}_1}$
-
$\frac{\text{l}_1\text{T}_2+\text{l}_2\text{T}_1}{\text{T}_2+\text{T}_1}$
What is the induced dipole moment developed per unit volume of a dielectric when placed in an external electric field called?
A heater coil is cut into two parts of equal length and one of them is used in the heater. The ratio of the heat produced by this half coil to that by the original coil is
|
(a) 2 : 1 |
(b) 1 : 2 |
(c) 1 : 4 |
(d) 4 : 1 |