Nccer Electrical level 1 module 3

A proton repels an __.

• Electron

• Proton

• Neutron

• Negative ion

An atom with seven valence electrons is most likely an __.

• Insulator

• Conductor

• Capacitor

• Semiconductor

Current flowing through a conductor coiled around an iron bar produces an __.

• Insulator

• Capacitor

• Electromagnet

• Turbine

The voltage used by a typical television or toaster is __.

• 60V

• 120V

• 180V

• 240V

Columb's law can be used to calculate the__.

• Direction of current flow

• force between two charges

• speed of electron movement

• Loss of current

The negative terminal of a battery contains a large reserve of free__.

• Electrons

• Protons

• Neutrons

• Acid

Which of the following does not have an effect on wire resistance?

• Temperature

• Type of power

• Wire length

• Material

Find the applied voltage when the current is 30A and the resistance is 4ohm.

• 30V

• 60V

• 120V

• 180V

A resistor with a gold band in the fourth position has a tolerance of__.

• +/- 1%

• +/- 5%

• +/- 10%

• +/- 20%

The total resistance in a 120V series circuit with three 10ohm resisters is__.

• 1.2ohm

• 12ohm

• 30ohm

• 120ohm