Question

Two parallel large thin metal sheets have equal surface charge densities $\left(\sigma=26.4\times10^{-12} c m^{2}\right)$ of opposite signs. The electric field between these sheets is

• A. $1.5 \,N/C$
• B. $1.5 \times 10^{-10} N/C$
• C. $3\,N/C$
• D. $3 \times 10^{-10} N/C$

Answer 1

Answer: (C)

Electric field between sheets is
$E=\sigma/ \varepsilon_{0} =\frac{26.4\times10^{-12}}{8.85\times10^{-12}} $
$\approx3\, N/ C$