Reference no: EM131000145
1. What is the direction of the electric field in a dielectric medium just outside the surface of a charged conducting plate?
Parallel to its surface
No direction, the field is zero
Perpendicular to its surface
2. If the same charged plate is put into a dielectric medium with a higher permittivity, what happens to the magnitude of the electric field it produces on the outside of its surface?
Decreases
Unchanged, but not zero
Remains zero
Increases
3. What is the direction of the electric field inside a charged metal plate?
Perpendicular to its surface
Parallel to its surface
No direction, the field is zero
4. A constant electric field of magnitude E = 779 V/m points in the positive x-direction. A charge Q is moved in positive x-direction within the field by an external force.
The work required is inversely proportional to the distance travelled.
The work required is independent of the angle of the path with respect to the field.
No work is required.
The work required is proportional to the square of the charge.
The work required is directly proportional to the distance travelled.
5. How much work by an external force does it take to move the charge Q = -49A??1C from x1= 0.09 m to x2= 0.473. true or false and explain why?
6. Which of the following statements regarding the electrostatic potential(zero at infinity) are true?
In an area where the electric field is constant, the potential is zero.
In an area where the potential is constant, the field is zero.
On the line between two positive charges, the electric potential is never zero.
The electric field lines are always parallel to equipotential surfaces.
The electric field is stronger where the potential is higher.
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