Lab 2: electric field and electric potential 1. Given a series of equipotential

Question

Lab 2: electric field and electric potential

1. Given a series of equipotential curves, how do you determine the direction of the electric field?

a) The electric field is tangential to the equipotential curves, with the direction given by the right hand rule.

b) The electric field is perpendicular to the equipotential curves, directed from low potential to high potential.

c) The electric field is perpendicular to the equipotential curves, directed from high potential to low potential.

2. Electric field is

a) the electric force that a proton would feel;

b) the electric force that an electron would feel;

c) the electric force per unit charge that an infinitesimal positive charge would feel; or

d) the electric force per unit charge that an infinitesimal negative charge would feel.

3. The electric field is strongest where the equipotential curves are

a) closest together;

b) farthest apart;

c) most nearly straight; or

d) most curvy.

4. The electric field is strongest where the equipotential curves are

a) are roughly parallel, equally spaced, and perpendicular to the plates;

b) are roughly parallel, equally spaced, and parallel to the plates;

c) all curve noticeably inward; or

d) all curve noticeably outward.

Explanation / Answer

here,

1)

the electric feild lines are directed from higher potential to lower potential

and

the electric feild lines are perpendicular to the equipotential surfaces

so, the correct option is

c) The electric field is perpendicular to the equipotential curves, directed from high potential to low potential.

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