Question

A square plate of side 2 m contains a charge uniformly distributed over one of its side, such that the surface charge density σ is 10C/m2. The net charge on the square surface is n coulombs, where n is a natural number. The value of n is __.

Solution

As we know surface charge density σ=chargesurfacearea                 Here σ=10C/m2,surfacearea=(length)2=4m2                 Charge =σ×surfacearea                             =10C/m2×4m2=40C                 Implies, n=40.

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