Ch. 16 Physics Word Questions

The unit of capacitance, the farad, is dimensionally equivalent to which of the following?

C/V

The unit of electrical potential, the volt, is dimensionally equivalent to:

J/C

There is a hollow, conducting, uncharged sphere with a negative charge inside the sphere. Consider the electrical potential at the inner and outer surfaces of the sphere. Which of the following is true?

The potentials on both surfaces are equal but not zero

Two capacitors with CA greater than CB and are connected in series with a battery. Which of the following is true?

There is the same charge stored on each capacitor

Two capacitors with CA greater than CB and are connected in parallel with a battery. Which of the following is true?

There is the same potential difference across both capacitors.

When charge Q1 is placed at point P1, the resulting potential at point P is V1. When Q2 is placed at point P2 after Q1 is in position at P1, the resulting potential at P becomes V2. What is the potential at point P if charge Q1 is then removed?

V2 - V1

In which case does an electric field do positive work on a charged particle?

a negative charge moves opposite to the direction of the electric field

A free electron is in an electric field. With respect to the field, it experiences a force acting:

anti-parallel (opposite in direction)

Increasing the separation of the two charged parallel plates of a capacitor, which are disconnected from a battery, will produce what effect on the capacitor?

decrease capacitance

The quantity of electrical potential, the volt, is dimensionally equivalent to:

electric field ' distance

Inserting a dielectric material between two charged parallel conducting plates, originally separated by air and disconnected from a battery, will produce what effect on the capacitor?

increase capacitance

Increasing the voltage across the two plates of a capacitor will produce what effect on the capacitor?

increase charge

If two parallel, conducting plates have equal positive charge, the electric field lines will:

leave both plates and go to infinity

At which location will the electric field between the two parallel plates of a charged capacitor be the strongest in magnitude?

midway between the two plates nearest their center

An ion is released from rest and moves due to the force from an electric field from a position in the field having a potential of 14 V to a position having a potential of 8 V. The ion:

must have a positive charge

If the distance between two isolated parallel plates that are oppositely charged is doubled, the electric field between the plates is essentially unchanged. However, the:

potential difference between the plates will double

Doubling the voltage across a parallel plate capacitor does not double which of the following?

the energy stored

Consider two charged spheres, one with charge +2 C and the other with -2 C. A proton (a positively charged particle) is at the point halfway between the spheres. What is not zero?

the force on the proton