COMEDK 2025 Afternoon Shift | Electrostatics Question 10 | Physics

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

COMEDK 2025 Morning Shift

MCQ (Single Correct Answer)

-0

Point charges $-3 Q,-q, 2 q$ and $2 Q$ are placed, one at each corner of a square. The relation between Q and q for which the potential at the centre of the square is zero is

$Q=\frac{1}{q}$

$Q=-q$

$Q=\frac{-1}{q}$

$Q=q$

COMEDK 2025 Morning Shift

MCQ (Single Correct Answer)

-0

For the charge configuration shown here, which of the following is not true?

COMEDK 2025 Morning Shift Physics - Electrostatics Question 11 English

$\frac{q_1}{q_2}=1$

$\left|q_1\right|=\left|q_2\right|$

$\left|q_1\right|>\left|q_2\right|$

$q_1$ and $q_2$ are negative

COMEDK 2025 Morning Shift

MCQ (Single Correct Answer)

-0

Two identical conducting balls having positive charges $q_1$ and $q_2$ are separated by a distance $r$. If they are made to touch each other and then separated to the same distance, the force between them will be

Same as before

zero

Less than before

More than before

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