Question 1 (1 point)

(9.23_q1) in a closed circuit, the electricity can flow from the negative battery terminal to the positive terminal because of a electrical path is provided.

complete

incomplete

beautiful

ugly

question 2 (1 point)

(9.23_q2) in a dc circuit powered by a battery, the electricity flows from the battery terminal

positive to the negative

negative to the positive

right to the left

left to right

question 3 (1 point)

(9.23_q3) in electricity and electronics, dc stands for

district of columbia

detective comics

direct current

alternating current

question 4 (1 point)

(9.23_q4) the flow of electrons (e-) thru a wire is called

resistance

ohms

electricity

question 5 (1 point)

(9.23_q5) there has to be a reason for electrons to move through a wire. this pressure causing the electrons to move is called

amperes (amps)

current

voltage

ohms

question 6 (1 point)

(9.23_q6) the amount of electrons flowing through a wire is measured in and has the symbol i.

amperes (amps)

resistance

voltage

ohms

question 7 (1 point)

(9.23_q7) electronic materials have resistance to the flow of electrons and it is measured in

amperes (amps)

current

voltage

ohms (ω)

question 8 (1 point)

(9.23_q8) a material which allows fewer electrons to travel through it has

high electrical resistance (high ohms, ω)

low electrical resistance (low ohms, ω)

question 9 (1 point)

(9.23_q9) the flow of electrons thru a wire is called electricity. the amount of electrons flowing through the wire is called

amperes (amps)

current

voltage

ohms

question 10 (1 point)

(9.23_q10) an electronic device meant to provide resistance to the flow of electrons is called a .

resistor

led

wire

question 11 (1 point)

(9.23_q11) which provides more resistance?

a 1 mω resistor

a 1 kω resistor

a 1 ω resistor

question 12 (1 point)

(9.23_q12) what happens if we hook up an led into a circuit in the wrong direction?

the led glows twice as bright as normal

the led glows half as bright as normal

the led glows normally, it makes no difference at all.

the led doesn’t glow at all

question 13 (1 point)

(9.23_q13) the correct formula for calculating the resistance needed to protect an electronic component from too much voltage is

component amps / forward voltage

power source voltage / component amps

(power source voltage - component forward voltage) / component amps

question 14 (1 point)

(9.23_q14) the led lead should be connected to the positive side of the battery.

shorter

longer

right

left

question 15 (1 point)

(9.23_q15) when building a protype circuit in the real world, instead of clamping or soldering connections, we would use a

resistor

breadboard

light emitting diode