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Standard VIII

Physics

Heating Effect of Electric Current

If a charge ...

Question

If a charge $Q$ is uniformly distributed on a surface of area $A$ , the surface charge density $σ$ is defined by

σ = d (Q A)

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σ = \frac{d Q}{d A}

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σ = \frac{d A}{d Q}

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σ = \frac{1}{d (Q A)}

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Solution

The correct option is B $σ = \frac{d Q}{d A}$
The surface charge density is defined as the amount of charge present is per unit area.

It is calculate by $σ = lim Δ A \to 0 \frac{Δ Q}{Δ A}$

$σ = \frac{d Q}{d A}$

Answer-(B)

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If a charge Q is uniformly distributed on a surface of area A, the surface charge density σ is defined by

The correct option is B σ=dQdAThe surface charge density is defined as the amount of charge present is per unit area.It is calculate by σ=limΔA→0ΔQΔAσ=dQdAAnswer-(B)

If a charge $Q$ is uniformly distributed on a surface of area $A$ , the surface charge density $σ$ is defined by

The correct option is B $σ = \frac{d Q}{d A}$
The surface charge density is defined as the amount of charge present is per unit area.

It is calculate by $σ = lim Δ A \to 0 \frac{Δ Q}{Δ A}$

$σ = \frac{d Q}{d A}$

Answer-(B)