Electric Fields

Front

Why are conductors, like copper, used in wires?

Back

They allow electrons to flow easily, carrying electric current.

Front

In a wire, electrons move in which direction relative to the electric field?

Back

Opposite direction to the field.

Front

The strength of an electric field is strongest where:

Back

Field lines are closer together.

Front

What is a field?

Back

A region of space where a physical quantity is assigned to every point.

Front

What does a scalar field assign to each point in space?

Back

Only a number (magnitude).

Front

What is an electric field?

Back

A region around a charged object where other charged objects experience a force.

Front

What is the unit of electric field strength?

Back

Volts per meter (V/m).

Front

How do you calculate the electric field (E) due to a point charge (Q) at a distance (r)?

Back

E = k * |Q| / r², where k is Coulomb's constant.

Front

What is the principle of superposition in electric fields?

Back

The total electric field is the vector sum of the electric fields due to individual charges.

Front

What is the difference between a scalar field and a vector field?

Back

A scalar field assigns a magnitude, while a vector field assigns both magnitude and direction.