Unit 02: Electrical Quantities and Ohm’s Law

A grounding conductor helps prevent a shock hazard in the event that an ungrounded, or hot, conductor comes in contact with the case or frame of an appliance.

• True

• False

During normal operation of a typical 120-volt appliance circuit, current flows through the hot, grounding, and neutral conductors.

• True

• False

The grounding prong of a plug should never be cut off or bypassed.

• True

• False

Voltage flows through an electric circuit like water flows through a pipe.

• True

• False

What law states that the force of electrostatic attraction or repulsion is directly proportional to the product of the two charges and inversely proportional to the square of the distance between them?

• Ampere’s Law

• Coulomb’s Law

• Ohm’s Law

• Volt’s Law

One coulomb per second is equal to one _____

• ampere

• ohm

• volt

• watt

The velocity of AC through a conductor is _____ the speed of light.

• equal to

• greater than

• less than

A complete circuit is often referred to as a(n) (a)   circuit.

• closed

• open

• series

• parallel

If a circuit is open, current (a)   flow.

• will

• will not

What type of circuit generally occurs when the conductors leading from and back to the power source become connected?

• short

• grounded

• open

• closed