WEEK 1 AC Theory Level 1 Lesson 1,2,3

The direction of induced ? flow through a conductor is determined by the direction of the magnetic field surrounding the conductor and the direction the conductor is traveling through the magnetic field.

Whenever a conductor cuts through magnetic lines of flux, a ? is induced into the conductor.

Whenever current flows through a conductor, a ? is created around the conductor.

When no current flows in a conductor, free electrons move ? , and their magnetic fields cancel.

• at random

• from negative to positivefrom positive to negative

• from positive to negative

• from source to load

When current flows in a conductor, a magnetic field is produced. As free electrons move in one direction, their individual magnetic fields ? .

• add together

• collapse

• flow together

• subtract from each other

The important factors needed for generation of an induced voltage are a conductor, a magnetic field, and ? .

• current

• poles

• relative motion

• voltage

As current flow decreases, the magnetic field surrounding the conductor will ? .

As the current passing through a coil increases, the magnetic field around the coil will ? .

When a conductor moves through a stationary magnetic field an EMF is induced, but when the magnetic field moves and the conductor remains stationary no EMF is induced.

• true

• false

Whenever an electric current flows through a conductor, a magnetic field is formed ? the conductor.

• above

• around

• below

• inside