COMEDK 2025 Afternoon Shift | Electrostatics Question 7 | Physics

Three point charges $-1 C,+1 C,+1 C$ are placed at points $A, B, C$ respectively of a triangle $A B C$. What is the total potential energy of the system? [given $\mathrm{AB}=\mathrm{AC}=6 \mathrm{~cm}$ and $\mathrm{BC}=3 \mathrm{~cm}$ ]

0 J (Zero joule)

$4.5 \times 10^{13} \mathrm{~J}$

$6 \times 10^{13} J$

$3 \times 10^{13} J$

COMEDK 2025 Afternoon Shift

MCQ (Single Correct Answer)

-0

The electric field versus distance graph is shown as given. Select the correct statement from the following.

E- electric field

R-radius

r - distance from the centre

COMEDK 2025 Afternoon Shift Physics - Electrostatics Question 6 English

The graph shows the variation of the electric field intensity with distance from the centre of a uniformly charged conducting ring of radius R.

The graph shows the variation of the electric field intensity with distance from the centre of a uniformly charged non conducting solid sphere of radius R.

The graph shows the variation of the electric field intensity with distance from the centre of a uniformly charged conducting solid sphere of radius R.

The graph shows the variation of the electric field intensity with distance from the centre of a uniformly charged non conducting cylinder of radius R.

COMEDK 2025 Afternoon Shift

MCQ (Single Correct Answer)

-0

What is the dimensional formula for electric flux?

$\left[\mathrm{M}^1 \mathrm{~L}^3 \mathrm{~T}^{-2} \mathrm{~A}^{-1}\right]$

$\left[\mathrm{M}^2 \mathrm{~L}^3 \mathrm{~T}^{-3} \mathrm{~A}^{-1}\right]$

$\left[\mathrm{M}^1 \mathrm{~L}^2 \mathrm{~T}^{-3} \mathrm{~A}^{-1}\right]$

$\left[\mathrm{M}^1 \mathrm{~L}^3 \mathrm{~T}^{-3} \mathrm{~A}^{-1}\right]$

COMEDK 2025 Afternoon Shift

MCQ (Single Correct Answer)

-0

When a metallic spherical shell of radius 20 cm is charged, the potential on its surface is found to be 5 V . The potential at a point 10 cm from the centre of the spherical shell is :

10 V

2.5 V

1.25 V

5 V

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