Two charges 8 mu C each are placed at the co | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(A) The electric potential $V$ at a point due to a point charge $q$ at a distance $r$ is given by $V = \frac{kq}{r}$,where $k = 9 	imes 10^9 \ N \ m^

Vedclass · Accepted Answer

$7.2 	imes 10^5 \ V$

Vedclass · Answer

(A) The electric potential $V$ at a point due to a point charge $q$ at a distance $r$ is given by $V = \frac{kq}{r}$,where $k = 9 	imes 10^9 \ N \ m^2 \ C^{-2}$.Since the triangle is equilateral with side $a = 0.2 \ m$,the distance from both corners $A$ and $B$ to corner $C$ is $r = 0.2 \ m$.The total potential at corner $C$ is the algebraic sum of the potentials due to charges at $A$ and $B$: $V_C = V_A + V_B$.$V_C = \frac{k q_A}{r} + \frac{k q_B}{r} = \frac{k}{r} (q_A + q_B)$.Substituting the values: $V_C = \frac{9 	imes 10^9}{0.2} (8 	imes 10^{-6} + 8 	imes 10^{-6}) \ V$.$V_C = \frac{9 	imes 10^9}{0.2} (16 	imes 10^{-6}) \ V$.$V_C = 9 	imes 10^9 	imes 80 	imes 10^{-6} \ V$.$V_C = 720 	imes 10^3 \ V = 7.2 	imes 10^5 \ V$.

Two charges $8 \ \mu C$ each are placed at the corners $A$ and $B$ of an equilateral triangle of side $0.2 \ m$ in air. The electric potential at the third corner $C$ is

Similar Questions

$A$ regular hexagon of side $10 \text{ cm}$ has a charge of $1 \mu\text{C}$ at each of its vertices. The potential at the centre of the hexagon is $\left[\frac{1}{4 \pi \varepsilon_0} = 9 \times 10^9 \text{ SI unit}\right]$.

Two charges $+q$ and $-q$ are placed at points $A$ and $B$ respectively, which are at a distance $2L$ apart. $C$ is the midpoint of $A$ and $B$. The work done in moving a charge $+Q$ along the semicircle $CSD$ $(W_1)$ and along the line $CBD$ $(W_2)$ are:

The electric potential at the centre of two concentric half rings of radii $R_1$ and $R_2$,having the same linear charge density $\lambda$,is $(\varepsilon_0 = \text{permittivity of free space})$

For a conducting sphere of radius $R$ carrying a charge $Q$,what is the electric potential at a distance $x$ from the center inside the sphere?

If a $10 \mu C$ charge exists at the centre of a square,the work done in moving a $2 \mu C$ point charge from corner $A$ to corner $B$ of a square $ABCD$ is

Vedclass Test Series

Exam Paper Generator

Online Exam Module