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xXYewTewbXx (November 30, 1999 at 12:00 am)
a capacitor may also explode if the insulation dries up over time.
drewadc (November 30, 1999 at 12:00 am)
No, whenever a capacitor is charged, it acts like an open circuit. This means that no current will flow in the circuit when a capacitor is charged.
korsez (November 30, 1999 at 12:00 am)
if i conect lamp between capacitor - and - terminal will it light brighter when it is charged?
frizspin175 (November 30, 1999 at 12:00 am)
all capacitors are AC, including this one. the 2nd demonstration of the lamp explains that the capacitor has an equal # of electrons on both leads so it stops supplying power to the lamp. capacitors work with AC current because the current alternates, so there is a constant push and pull of electrons between the two leads on the capacitor so it doesn't become neutral.
zomgerln (November 30, 1999 at 12:00 am)
it is fully charged..K, UBER THAT HEAVY AND STORM THE BLUE TEAM!
redSHIFT69 (November 30, 1999 at 12:00 am)
great MCAT review! thanks :)
msdaif (November 30, 1999 at 12:00 am)
For a load with a resistance R, a power supply with e.m.f of E, the current is I=E/R. For the electromagnet, you need to measure its resistance , say RL, and energizing current, say IL. Then,IL=E/RL. You could send me an email explaining what you want to do and I can help you with the design, free of charge.
kkob (November 30, 1999 at 12:00 am)
So how do I make a capacitor discharge at a given level of current? And, how do I figure out how much current I need to energize the magnet? Sorry, I'm a complete idiot on this but have an intriguing idea I want to try.
mikeyidh (November 30, 1999 at 12:00 am)
Are there Ac power capacitors.
msdaif (November 30, 1999 at 12:00 am)
The capacitor may explode if:1. its rated voltage exceeded or2. it is connected in reverse |
