Modern Commercial Wiring Ch 1 - 7

The opposition to the flow of electrons through a circuit is called ____.

• current

• voltage

• resistance

• None are correct.

All matter is made up of tiny particles called ____.

• units

• matter

• atoms

• quasars

Silver, copper, and aluminum are examples of materials that ____.

• are resistors

• are insulators

• are conductors

• possess few easily moved electrons

Resistance equals ____.

• voltage multiplied by current

• current multiplied by voltage

• current divided by voltage

• voltage divided by current

The severity of electrical shock will increase if the ____.

• floor is wet

• floor is dry

• worker releases the shocking equipment immediately

• current path is away from the heart

The arc and explosion of a high-voltage short circuit is hazardous because ____.

• a tremendous amount of heat can be generated

• the sudden expansion of air may cause enough noise to cause loss of hearing

• a nearby worker could be thrown back into adjacent equipment

• All are correct.

The procedures that prevent a circuit from being connected are called ____.

• lockout/tellout

• hangout/blockout

• lockout/tagout

• tagout/keepout

To pull and drive nails, use a ____ hammer.

• claw

• club

• sledge

• ball peen

When driving ground rods, use a(n) ____ hammer.

• lineman’s

• claw

• electrician’s

• ball peen

To lift boards, use a(n) ____ hammer.

• claw

• electrician’s

• lineman’s

• ball peen