Question

Two identical point charges are placed at the two vertices A and B of an equilateral triangle of side l. The magnitude of the electric field at the third vertex P is E. If a hollow conducting sphere of radius (l/4) is placed at P, the magnitude of the electric field at point P now becomes ______.

पर्याय

• >E

• E

• `E/2`

• zero

Answer 1

Two identical point charges are placed at the two vertices A and B of an equilateral triangle of side l. The magnitude of the electric field at the third vertex P is E. If a hollow conducting sphere of radius (l/4) is placed at P, the magnitude of the electric field at point P now becomes zero.

Explanation:

A hollow conducting sphere placed at P will create an induced charge distribution on its surface. This redistribution of charge ensures that the electric field inside the hollow portion of the conductor is zero. Since P is inside the hollow sphere, the electric field at P must be zero.