ch50

What is an open circuit

• Wire that has rubbed into a power wire

• A break in the wire

• Wire that has rubbed into the ground

• All of the above

Checking the circuit for continuity will always determine all electrical faults

• true

• false

The low-resistance fault causes abnormally high current flow in the circuit and may cause the circuit protection devices, such as fuses circuit breakers, to open the circuit

• True

• False

Alternating current

• Moves from positive to negative

• Moves from negative to positive

• Moves back and fourth

• Moves in one direction only

Technician A says amperage cannot exist without both Voltage and resistance.

Technician B says if amperage is high, then you know that one of two conditions is present low voltage or high resistance. Who is correct?

• Technician A

• Technician B

• Both A and B

• Neither A and B

Two technicians are discussing electron flow. Tech A says that in [conventional theory] current is believed to flow from positive to negative. Tech B says thet in {electron theory] current is believed to flow from negative to positive.Who is correct?

• Tech A

• Tech B

• Both A and B

• Neither A nor B

In calculating ohms law,____

• R stands for -resistance

• V stands for -volts

• A stands for - current

• All of the above

In an electrical circuit,_____ refers to the rate at which electrical energy is transformed into another kind of energy.

• Amps

• Power

• Volts

• Resistance

Tech A says power is the rate at which work is performed. Tech B says 1 watt is produced when 12 volts cause 1 amp of current to flow. Who is correct

• Tech A

• Tech B

• Both A and B

• Neither A nor B

The _____ is used to describe how much current or how many electrons are flowing at a given point in a given amount of time when work is being performed for example, when a lamp is operating.

• Volts

• Ampere

• Ohm

• None of the above