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Three last Q’s for the exam.
1. Is Current is the amount of electricity moving in a circuit?
2. Is Voltage is the “electrical pressure” across two points in a circuit?
3. Is Resistance the opposition to electrical movement in a circuit?thanks!
Matt
Exam question: #26 A given circuit consists of a switch, a fuse, and a 70 watt light bulb powered by a standard 120 vac source. For the light to be on, what is the correct voltage drop across the fuse?
So because fuses have no voltage drop the answer would be 0 voltage drop.
#26 you would measure 120 vac.
#7 So the nutral is open because you get 120 vac but the circuit is not completed to allow the light bulb to work.
about exam Q #7 Line 1 is open. if you get 120 VAC from neutral to the light bulb terminal and the light bulb is good then the open would be in Line 1.
about the first question I asked: #26. Is it 120 voltage drop on series circuit?
Here is another problem:
Question #7: You’re troubleshooting a problem with an appliance where a light bulb won’t light up. You’ve already proven that the light bulb is good with a continuity test and it’s a known-good receptacle. You use your meter to test for 120 V AC from one of the terminals of the light to neutral and you read 120 V AC on your meter. You place your probes across the two terminals of the light bulb and read zero. What do you conclude? (Again, the light bulb has already been established as being good.)
Your Answer: The the circuit is open somewhere before it comes back to the power source. Or it is shorted out.
The only other thing I can think of is that It does not have full power supply.
so the answer is 0 right because no voltage is dropped across the fuse?
thanks
so the voltage drop would be 120 v.
because there is only a light bulb.
o it is a switch
Here are the calculations.
240 ÷ 36 = 6.6666666666666667
6.6666666666666667² x 4 = [177.7777777777778 watts
240 ÷ 36 = 6.6666666666666667
6.6666666666666667² x 6 = [266.6666666666667 watts
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Is the answer right above the arrows the correct answer?Is the answer to question number #6 = 177.7777777777778?
For question 9 #2, is it supposed to be 0 volts from L1 to the heating element and neutral is just a reference point to measure voltage?
you put 2. “When you half split the circuit and find that there are 0 volts from L1 to neutral it shows that there is an open somewhere in L1, or L1 is not being supplied.”
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