give as many reasons why a bulb might not light in an electrical circuit even if it is properly connected please help
2007-09-14 05:27:25 · 10 answers · asked by melody3470 2 in Science & Mathematics ➔ Other - Science
Current --- not enough of it for you to see the light, or none at all -- like the filament is broken, or maybe you didn't turn on the light switch.
2007-09-14 05:34:16 · answer #1 · answered by Bruce O 3 · 1⤊ 1⤋
The breaker may have a thermal disconnect in it, meaning if the breaker heats up to a certain point, the breaker will trip to prevent a fire hazard. An air conditioner draws a lot of current, and if it is used for long periods of time, the wires will heat up. You mentioned 15 amps of current on each hot leg. Is this the amount of current per leg that the A/C is drawing when it's on, or is this the amount measured with the a/c off? It may be drawing close to the 40 amp limit during operation. Check the a/c specs, and if need be, have an electrician look at it. You might want to have an electriclian check it anyway, as I have been living in my house for over 11 years, and just found out that the wall sockets downstairs and in the garage were all wired backwards, and some were missing ground connections. If the a/c is causing the breaker to heat up, definitely get that checked on, as if the thermal connector fails, it might start a fire.
2016-05-19 04:35:41 · answer #2 · answered by ? 3 · 0⤊ 0⤋
Broken wire inside power cord
tripped circuit breaker
bad switch
bad ground
dirty connections
2007-09-14 05:35:48 · answer #3 · answered by minn1871 1 · 0⤊ 0⤋
1. Most common is bad bulb
2. Second is switch is off
3. Defective switch or cord
4. Not plugged in
5. Wall outlet has a wall switch which is off
6. Fuse or circuit breaker for that outlet is off
7.No electricity to the area
2007-09-14 05:34:29 · answer #4 · answered by ignoramus 7 · 0⤊ 0⤋
Bad bulb.
No power.
Bad switch (if in circuit)
Bad wire.
Bulb may be for a different (higher) voltage
2007-09-14 05:42:38 · answer #5 · answered by A Guy 7 · 0⤊ 0⤋
Blown bulb, lighting fuse tripped, light switch is faulty or broken cable which I doubt.
When in doubt contact a qualified electrician.
2007-09-14 05:34:28 · answer #6 · answered by Anonymous · 0⤊ 0⤋
1.Filament in the light bulb might be broken,defective, or burned out.
2.Switch may be defective.
3.A splice may have come loose.
4.A screw connection might have come loose.
5.A breaker might have tripped.
6.Fluorescent lights have other factors like ballasts.
2007-09-14 05:44:23 · answer #7 · answered by ? 4 · 0⤊ 0⤋
Other answers fine but LED's will only give light if the voltage sign is correct for conduction.
2007-09-14 07:57:36 · answer #8 · answered by Anonymous · 0⤊ 0⤋
the lamp might be shorted...
its filament might be already burned out... (the lam is simply broken)
the switch isn't turned on :D
very insufficient voltage/current...
2007-09-14 05:39:25 · answer #9 · answered by blue_ice30 1 · 0⤊ 0⤋
the bulb is defective, or
there is no current,
2007-09-14 05:35:44 · answer #10 · answered by sm bn 6 · 0⤊ 0⤋