Some strings of holiday lights are wired in series to save wiring costs. An old version utilized bulbs that break the electrical connection, like an open switch, when they burn out. If one such bulb burns out, what happens to the others? If such a string operates on 120 V and has 40 identical bulbs, what is the normal operating voltage of each? Newer versions use bulbs that short circuit, like a closed switch, when they burn out. If one such bulb burns out, what happens to the others? If such a string operates on 120 V and has 39 remaining identical bulbs, what is then the operating voltage of each?
Some strings of holiday lights are wired in series to save wiring costs. An old version utilized bulbs that break the electrical connection, like an open switch, when they burn out. If one such bulb burns out, what happens to the others? If such a string operates on 120 V and has 40 identical bulbs, what is the normal operating voltage of each? Newer versions use bulbs that short circuit, like a closed switch, when they burn out. If one such bulb burns out, what happens to the others? If such a string operates on 120 V and has 39 remaining identical bulbs, what is then the operating voltage of each?
Some strings of holiday lights are wired in series to save wiring costs. An old version utilized bulbs that break the electrical connection, like an open switch, when they burn out. If one such bulb burns out, what happens to the others? If such a string operates on 120 V and has 40 identical bulbs, what is the normal operating voltage of each? Newer versions use bulbs that short circuit, like a closed switch, when they burn out. If one such bulb burns out, what happens to the others? If such a string operates on 120 V and has 39 remaining identical bulbs, what is then the operating voltage of each?
N. 8. Some light bulbs are connected in parallel to a 120 V source as shown in the figure. Each
bulb dissipates an average power of 60 W. The circuit has a fuse F that burns out when the
current in the circuit exceeds 9 A. Determine the largest number of bulbs, which can be used in
this circuit without burning out the fuse.
120 V
...
A) 9
B) 17
C) 25
D) 34
E) 36
Six circuits containing a battery and two or more bulbs are shown here.
A. In which circuits are A and B connected in series with each other?
1
2
3
4
5
6
B. In which circuits are A and B connected in parallel with each other?
1
2
3
4
5
6
Bulb A has a resistance of 2 Ω; bulb B has a resistance of 6 Ω; bulb C has a resistance of 5 Ω; the battery has a potential difference of 6 V.
C. What are the total resistance Rtot and the current flowing from the battery I in circuit 1?Rtot = ΩI = A
A circuit contains a 6.0-V battery, a 4.0-0 resistor, a 0.60 pF capacitor, and a switch in series. What will be the charge
on the capacitor 10 min after the switch is closed?
zero
O
0 0.10 μC
03.6 μC
024μC
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DC Series circuits explained - The basics working principle; Author: The Engineering Mindset;https://www.youtube.com/watch?v=VV6tZ3Aqfuc;License: Standard YouTube License, CC-BY