Find the electric dipole moment of a non-conducting ring of rad-Turito

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Find the electric dipole moment of a non-conducting ring of radius $a$ , made of two semicircular rings having linear charge densities $negative 1$ and $plus 1$ as shown in Figure.

$2 λ a^{2}$
4 $λ a^{2}$
$λ a^{2}$
$2 \sqrt{2} λ a^{2}$

The correct answer is: 4 $blank lambda a to the power of 2 end exponent$

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In the arrangement shown both plates of capacitors

C subscript 3 end subscript

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C subscript 1 end subscript

and

C subscript 2 end subscript

are in parallel, hence

C subscript A B end subscript equals C subscript 1 end subscript plus C subscript 2 end subscript equals C plus C equals 2 C

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C subscript 3 end subscript

are joined to point

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Hence, it does not act as a capacitor and is superfluous. Now

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and

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are in parallel, hence

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A 20 $μ F$ capacitor is connected to 45 V battery through a circuit whose resistance is 2000 $Ω .$ What is the final charge on the capacitor?

We know that in steady state the capacitor behaves like as an open circuit

i e

, capacitor will not pass the current.

So, the potential difference across the capacitor = 45 V Hence , the final charge on the capacitor is

q = C V

Here ,

C = 20 μ F, V = 45 V

∴ q = 20 \times 10^{- 6} \times 45

q = 900 \times 10^{- 6}

q = 9 \times 10^{- 4} C

A 20 $μ F$ capacitor is connected to 45 V battery through a circuit whose resistance is 2000 $Ω .$ What is the final charge on the capacitor?

physics-General

We know that in steady state the capacitor behaves like as an open circuit

i e

, capacitor will not pass the current.

So, the potential difference across the capacitor = 45 V Hence , the final charge on the capacitor is

q = C V

Here ,

C = 20 μ F, V = 45 V

∴ q = 20 \times 10^{- 6} \times 45

q = 900 \times 10^{- 6}

q = 9 \times 10^{- 4} C

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Question

Find the electric dipole moment of a non-conducting ring of radius $a$ , made of two semicircular rings having linear charge densities $negative 1$ and $plus 1$ as shown in Figure.

$2 λ a^{2}$
4 $λ a^{2}$
$λ a^{2}$
$2 \sqrt{2} λ a^{2}$

Answer

The correct answer is: 4 $blank lambda a to the power of 2 end exponent$

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Question

Find the electric dipole moment of a non-conducting ring of radius, made of two semicircular rings having linear charge densities and as shown in Figure.

4

Answer

The correct answer is: 4

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Three charges are placed at the vertex of an equilateral triangle as shown in figure. For what value of, the electrostatic potential energy of the system is zero?

Three charges are placed at the vertex of an equilateral triangle as shown in figure. For what value of, the electrostatic potential energy of the system is zero?

Figure shows three points A, B and C in a region of uniform electric field E. The line AB is perpendicular and BC is parallel to the field lines. Then which of the following holds good?Where represent the electric potential at the points A, B and C respectively.

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Quick Links

Find the electric dipole moment of a non-conducting ring of radius $a$ , made of two semicircular rings having linear charge densities $negative 1$ and $plus 1$ as shown in Figure.

$2 λ a^{2}$
4 $λ a^{2}$
$λ a^{2}$
$2 \sqrt{2} λ a^{2}$

The correct answer is: 4 $blank lambda a to the power of 2 end exponent$

Find the capacitance between $P$ and $O$ (Fig). Each capacitor has capacitance C.

Find the capacitance between $P$ and $O$ (Fig). Each capacitor has capacitance C.

Three charges are placed at the vertex of an equilateral triangle as shown in figure. For what value of $blank Q$ , the electrostatic potential energy of the system is zero?

Three charges are placed at the vertex of an equilateral triangle as shown in figure. For what value of $blank Q$ , the electrostatic potential energy of the system is zero?

Effective capacitance between points $A blank a n d blank B$ in the figure, shown is

Effective capacitance between points $A blank a n d blank B$ in the figure, shown is

A number of capacitors, each of equal capacitance $C$ , are arranged as shown in Fig. The equivalent capacitance between $A$ and $B$ is

A number of capacitors, each of equal capacitance $C$ , are arranged as shown in Fig. The equivalent capacitance between $A$ and $B$ is

Find the charge that will flow through the wire $A$ to $B$ if the switch $S$ is closed. The capacitance of each capacitor shown in the figure is $C$

Find the charge that will flow through the wire $A$ to $B$ if the switch $S$ is closed. The capacitance of each capacitor shown in the figure is $C$

A 20 $μ F$ capacitor is connected to 45 V battery through a circuit whose resistance is 2000 $Ω .$ What is the final charge on the capacitor?

A 20 $μ F$ capacitor is connected to 45 V battery through a circuit whose resistance is 2000 $Ω .$ What is the final charge on the capacitor?