Charges are placed on vertices of a square as shown Let vec E be electric field and V potential

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2. Electric Potential and Capacitance

easy

Charges are placed on the vertices of a square as shown Let $\vec E$ be the electric field and $V$ the potential at the centre. If the charges on $A$ and $B$ are interchanged with those on $D$ and $C$ respectively, then

$\;\vec E$ changes, $V$ remains unchanged

$\;\vec E$ remains unchanged, $V $ changes

Both $\;\vec E$ and $V $ change

$\;\vec E$ and $V $ remains unchanged

(AIEEE-2007)

Solution

As shown in the figure, the resultant electric fields before and after interchanging the charges will have the same magnitude, but opposite directions.

Also, the potential will be same in both cases as it is a scalar quantity.

Standard 12

Physics

Two charges of $4\,\mu C$ each are placed at the corners $A$ and $B $ of an equilateral triangle of side length $0.2\, m $ in air. The electric potential at $C$ is $\left[ {\frac{1}{{4\pi {\varepsilon _0}}} = 9 \times {{10}^9}\,\frac{{N{\rm{ – }}{m^2}}}{{{C^2}}}} \right]$

easy

As shown in the figure, charges $ + q$ and $ – q$ are placed at the vertices $B$ and $C$ of an isosceles triangle. The potential at the vertex $A$ is

easy

(AIIMS-2002)

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easy

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medium

Electric charges having same magnitude of electricicharge $q$ coulombs are placed at $x=1 \,m , 2 \,m , 4 \,m$, $8 \,m$……. so on. If any two consecutive charges have opposite sign but the first charge is necessarily positive, what will be the potential at $x=0$ ?

medium

Charges are placed on the vertices of a square as shown Let $\vec E$ be the electric field and $V$ the potential at the centre. If the charges on $A$ and $B$ are interchanged with those on $D$ and $C$ respectively, then

Solution

Similar Questions

Two charges of $4\,\mu C$ each are placed at the corners $A$ and $B $ of an equilateral triangle of side length $0.2\, m $ in air. The electric potential at $C$ is $\left[ {\frac{1}{{4\pi {\varepsilon _0}}} = 9 \times {{10}^9}\,\frac{{N{\rm{ – }}{m^2}}}{{{C^2}}}} \right]$

As shown in the figure, charges $ + q$ and $ – q$ are placed at the vertices $B$ and $C$ of an isosceles triangle. The potential at the vertex $A$ is

Two unlike charges of magnitude $q$ are separated by a distance $2d$. The potential at a point midway between them is

Electric field at a point $(x, y, z)$ is represented by $\vec E = 2x\hat i + {y^2}\hat j$ if potential at $(0,0,0)$ is $2\, volt$ find potential at $(1, 1, 1)$

Electric charges having same magnitude of electricicharge $q$ coulombs are placed at $x=1 \,m , 2 \,m , 4 \,m$, $8 \,m$……. so on. If any two consecutive charges have opposite sign but the first charge is necessarily positive, what will be the potential at $x=0$ ?

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