Me with this quiz
question 1 (1 point)
(9.23_q1) in a closed circuit, the el...
Me with this quiz
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
Answers: 1
Physics, 22.06.2019 02:50
Ammonia enters the expansion valve of a refrigeration system at a pressure of 10 bar and a temperature of 18oc and exits at 6.0 bar. the refrigerant undergoes a throttling process. determine the temperature, in oc, and the quality of the refrigerant at the exit of the expansion valve.
Answers: 3
Physics, 22.06.2019 14:00
Awater balloon launcher uses an elastic band with a spring constant of 115 n/m to use thee launcher you stretch thee band back with a balloon n it the water balloons have a mass of 1.3 kg a) if you stretch the band by 0.8 m, what elastic force will the band exert? b) with the band stretched 0.8 m, how much elastic potential energy is stored in the spring? c) if you release the band, it pushes forward. what is the kinetic energy of the balloon when it reaches the natural length of the band? d) what is the speed of the balloon when it reaches the natural length of the band?
Answers: 1
Physics, 22.06.2019 16:00
An charge with mass m and charge q is emitted from the origin, (x,y)=(0,0). a large, flat screen is located at x=l. there is a target on the screen at y position y(h), where y(h) > 0. in this problem, you will examine two different ways that the charge might hit the target. ignore gravity in this problem. 1.assume that the charge is emitted with velocity v(0) in the positive x direction. between the origin and the screen, the charge travels through a constant electric field pointing in the positive y direction. what should the magnitude e of the electric field be if the charge is to hit the target on the screen? express your answer in terms of m, q, y(h), v(0), and l. 2.now assume that the charge is emitted with velocity v(0) in the positive y direction. between the origin and the screen, the charge travels through a constant electric field pointing in the positive x direction. what should the magnitude e of the electric field be if the charge is to hit the target on the screen? express your answer in terms of m, q, y(h), v(0), and l.
Answers: 1
Physics, 22.06.2019 16:00
Rank the six combinations of electric charges on the basis of the electric force acting on q1. define forces pointing to the right as positive and forces pointing to the left as negative. rank positive forces as larger than negative forces. q1,q2,q3 = positive(+) q1 = + q2 = + q3 = - q1 = + q2= - q3= + q1= - q2= + q3= + q1= + q2= - q3= - q1,q2,q3 = negative
Answers: 1
English, 23.08.2019 17:30
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Computers and Technology, 23.08.2019 17:30