1. Tardigrade
  2. Question
  3. Physics
  4. The charge Q =π C is distributed on a thin semicircular ring of radius R =2 m. There is a uniform electrostatic field | E |=2 N / C directed horizontal. The semicircular ring can rotate freely about a fixed vertical axis AB. Initially the ring is in static equilibrium a shown in figure. If we want to rotate it about the fixed axis by 90° then minimum work required on the ring is x J. Find the value

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Q. The charge $Q =\pi C$ is distributed on a thin semicircular ring of radius $R =2 m$. There is a uniform electrostatic field $|\overrightarrow{ E }|=2 N / C$ directed horizontal. The semicircular ring can rotate freely about a fixed vertical axis $AB$. Initially the ring is in static equilibrium a shown in figure. If we want to rotate it about the fixed axis by $90^{\circ}$ then minimum work required on the ring is $x J$. Find the valuePhysics Question Image

Electrostatic Potential and Capacitance

Solution:

Correct answer is '8.00'