Question
Find the capacitance of the combination shown in figure between $A$ and $B.$
✓
Answer
$= C_5$ and $C_1$ are in series
$\text{C}_{\text{eq}}=\frac{2\times2}{2+2}=1$
This is parallel to $C_6 = 1 + 1 = 2$
Which is series to $\text{C}_{\text{2}}=\frac{2\times2}{2+2}=1$
Which is parallel to $C_7 = 1 + 1 = 2$
Which is series to $\text{C}_{\text{3}}=\frac{2\times2}{2+2}=1$
Which is parallel to $C_8 = 1 + 1 = 2$
This is series to $\text{C}_{\text{4}}=\frac{2\times2}{2+2}=1$
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
Figure shows a convex spherical surface with centre of curvature $C$ separating the two media of refractive indices $\mu_1$ and $\mu_2$. Draw a ray diagram showing the formation of the image of a point object $O$ lying on the principal axis. Derive the relationship between the object and image distance in terms of refractive indices of the media and the radius of curvature $R$ of the surface.
→Ajit had a high tension tower erected on his farm land. He kept complaining to the authorities to remove it as it was occupying a large portion of his land. His uncle, who was a teacher, explained to him the need for erecting these towers for efficient transmission of power. As Ajit realised its significance, he stopped complaining.
Answer the following questions:
Answer the following questions:
- Why is it necessary to transport power at high voltage?
- A low power factor implies large power loss. Explain.
- Write two values each displayed by Ajit and his uncle.
Define capacitor. Obtain the relation of equivalence in series combination of capacitors by making a circuit diagram. Write the value of voltage $V_1$ in the given circuit.
→- Obtain lens makers formula using the expression
- $\frac{\text{n}_{2}}{\text{v}} - \frac{\text{n}_{1}}{\text{u}} = \frac{(\text{n}_{2} - \text{n}_{1})}{\text{R}}$
Here the ray of light propagating from a rare medium of refractive index $(n_1)$ to a denser medium of refractive index $(n_2)$ is incident on the convex side of spherical refracting surface of radius of curvature $R.$ - Draw a ray diagram to show the image formation by a concave mirror when the object is kept between its focus and the pole. Using this diagram, derive the magnification formula for the image formed.
- Draw the ray diagram of an astronomical telescope when the final image is formed at infinity. Write the expression for the resolving power of the telescope.
- An astronomical telescope has an objective lens of focal length 20m and eyepiece of focal length 1cm.
- Find the angular magnification of the telescope.
- If this telescope is used to view the Moon, find the diameter of the image formed by the objective lens. Given the diameter of the Moon is $3.5 \times 10^6m$ and radius of lunar orbit is $3.8 \times 10^8m.$
A long solenoid of radius $2\ cm$ has $100\ turns/cm$ and carries a current of $5A.$ A coil of radius $1\ cm$ having $100$ turns and a total resistance of $2\Omega$ is placed inside the solenoid coaxially. The coil is connected to a galvanometer. If the current in the solenoid is reversed in direction, find the charge flown through the galvanometer.
→Use Moseley's law with $b = 1$ to find the frequency of the $\text{K}_\alpha X-$ray of $La(Z = 57)$ if the frequency of the $\text{K}_\alpha X-$ray of $Cu(Z = 29)$ is known to be $1.88 \times 10^{18}Hz$.
→Solve the previous problem if the friction coefficient between the $2.0\ kg$ block and the plane below it is $0.5$ and the plane below the $4.0\ kg$ block is frictionless.
→What is rivetted galvanometer? What is the function of shunt in a galvanometer?
On the basis of band theory, differentiate between conductors, insulators and conductors.