Physics

posted by .

A square plate of copper with 53.0 cm sides has no net charge and is placed in a region of uniform electric field of 77.0 kN/C directed perpendicularly to the plate. Find the charge density of each face of the plate.

  • Physics -

    The charges will be equal and opposite for the two faces. I suggest you apply Gauss' law to a "pillbox-shape" volume with one surface above the copper and one between the two surface of the copper.
    There will be no E field coming out of the lower surface, because it is a conductor.

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Physics

    A paralle plate air capacitor has a capacitance of 500.0 pF and a charge of magnitude 0.200 uC on each plate. The plates are 0.6 mm apart. (a) What is the potenetial difference between the plates?
  2. physics

    the region 0 < r < r1 is a charged insulating sphere with uniform charge density _E, the region r1 < r < r2 contains free space, and the region r2 < r < r3 is an insulating spherical shell with uniform charge density …
  3. Physics

    A square plate of copper with 50 cm sides has no net charge and is placed in a region of uniform electric field of 80.0 kN/C directed perpendicular to the plate. Find (a) thr charge density at each face of the plate and (b) the total …
  4. Physics

    An electromagnetic wave has an electric field strength of 145 V/m at a point P in space at time t. A parallel-plate capacitor whose plates have area 0.109 m2 has a uniform electric field between its plates with the same energy density …
  5. physics(check my answers)

    a large thin conducting plate has a net charge q. the charge density on each side of conducting plate is : q/2A electric field on each side is :q/2epsilon=q/4Aepsilon Does the charge on the right surface contribute to the electric …
  6. Physics

    Two plates, each of area 3.40*10-4 m2, are used to construct a parallel-plate capacitor with capacitance 1.20 pF. (a) Find the necessary separation distance. d = ?
  7. Physics

    A parallel plate air capacitor of capacitance 245pF has a charge of magnitude 0.148ìC on each plate. The plates are 0.328mm apart. (a) What is the potential difference between the plates?
  8. Physics

    Imagine a very large nonconducting plate that has a uniform surface charge density σ =1 μC/m2; it also shows a point charge Q = -3 μC at distance d = 0.3 m from the plate. Both are fixed in place. We choose the origin …
  9. Physics

    A parallel plate capacitor has a rectangular plates with length 5cm and width 3cm. They are separated by a distance 12m and hooked up to a 20V battery A.) what is the area of each plate in m^2 B.) assuming nothing else is present on …
  10. physics

    a parallel plate capacitor has an area of 5cm^2 and a capacitance of 3.5PF. the capacitor is connected to a 12v battery .after the capacitor is completely charge up the battery is removed. a)what must be the separation of the plates …

More Similar Questions