electrical dsa

a two-branch parallel circuit has 30 ohms and a 15 ohms resistor. what is the total resistance?

10 ohms

in kitchens a receptacle outlet must be installed at each counter space that is_________ or wider

12" wide

a series circuit is composed of two 60 ohms resistors. what is the total resistance?

120 ohms

receptacle shall be installed so that so that no point measured horizontally along the floor the floor line in any wall space is more than how many feet from a receptacle outlet.

12ft

a toaster is listed as 1560 W. when is it plugged into 120 V circuit and starts to make toast, how many amperes will it draw?

13 amps

isolated , individual wall spaces_____ or more in width are considered usable for the location of a lamp or appliance, and a receptacle outlet is required

2"

in which of the following NEC tables would you find information on box fill?

314.16

a straight or extension ladder should extend at least_____ above the top support when placed against a structure that is not as tall as the ladder.

36"

nonmetallic sheathed cable, nmc, must be supported at intervals not exceeding________.

4.5 feet

a parallel circuit composed of a 10 ohm and a 22 ohm resistor. it has a supply voltage of 60 V. what is the current in the 10 ohm resistor?

5 A

at least_____ of free conductor shall be left at each lamp holder, receptacle, and outlet junction and switch poin for splices or connections to fixture or devices.

6 inches

hallways of_________ or more in length must have at least one receptacle outlet.

6'

a three- branch parallel circuit has resistances of 22k ohm, 68k ohm, and 33k ohm connected to a 300 V source. what is the total power of circuit?

8.14W

in general, junction and outlet boxes must be?

accessible

current can be measured using an.

ammeter

the black(hot) wire is attached to the_______ on the receptacle.

brass screw

to wire a duplex receptacle so that one receptacle is switched you need to_________.

break the tab on the side with the brass screw

clamp-on meters connect to?

connect around one conductor only

the grounded conductor is terminated to the________ terminal on a receptacle.

green

when is it permissible to work on energized electrical circuit?

never work on an energized circuit

Resistance is measured with an

ohmmeter

the type of meter that must never be connected to a circuit when the circuit has power is the?

ohmmeter

the statement" current is directly proportional to voltage and inversely proportional to resistance" is known as_____ law.

ohms

a voltmeter is connected in_________ to the circuit.

parallel

circuits that have more than one path for current flow are________ circuits.

parallel

which of the following types of extinguishers should not be used on fires?

pressurized water

in walls made of noncombustible materials, electrical boxes must be mounted so they are_______ the finished wall surface.

set back no more than 1/4" from

in a parallel circuit, the total resistance is______ value resistance.

smaller than the smallest

in a parallel circuit, the current is equal to the________ of the individual branch circuits.

sum

the highest usable step on a stepladder is

the second from top

the national electrical code is revised every________ years?

three

a bathroom is an area including a basin and one or more of the following:

toilet,tub, shower