Two infinite nonconducting sheets of charge and one infinite conducting slab are placed perpendicular to the x direction as shown in the following figure. The conducting slab is electrically neutral and labeled C. The charge densities on the two sheets of charge are s1 = +4 µC/m^2 and s2 = -7.5 µC/m^2.
1) The x-component of the electric field at x = -0.25 m is:
Ex = 0.226 × 10^6 V/m
Ex = -0.226 × 10^6 V/m
Ex = -0.198 × 10^6 V/m
Ex = -0.649 × 10^6 V/m
Ex = 0.198 × 10^6 V/m
2) The electric field (consider both its magnitude and direction) at x = 0.65 m is:
Zero
The same as at x = 1.0 m
The same as at x = 0.1 m
The same as at x = -0.2 m
Undefined, unless the zero of the potential is specified.
3) Calculate the magnitude of the potential difference between x = 0.64 m and x = 0.3 m.
ΔV = 0.221 × 10^6 Volts
ΔV = 0.102 × 10^6 Volts
ΔV = 0.144 × 10^6 Volts
ΔV = 0.156 × 10^6 Volts
ΔV = 0 Volts