This is not my homework but rather something that suddenly occurred to me. batteries and bulbs are somethings i see often but yet i dont seem to have complete knowledge of. please enlighten me :)
say i connected 3 batteries in series to a bulb. the bulb lights up. now i swap the polarity of one of the 3 batteries. what will happen?
-the bulb becomes dimmer (due to the opposing current of the reversed battery)
or
-the circuit will not light up at all (due to the reversed battery blocking all the current)
next scenario
I connected 2 batteries in series and another battery in parallel but in the opposing direction to a bulb. what will happen?
-the bulb becomes dimmer (due to the opposing current of the reversed battery)
or
-the circuit will not light up at all (due to the reversed battery blocking all the current)
or
-no effect at all. the bulb will shine as if there isnt any battery connected in parallel.
say i connected 3 batteries in series to a bulb. the bulb lights up. now i swap the polarity of one of the 3 batteries. what will happen?
-the bulb becomes dimmer (due to the opposing current of the reversed battery)
or
-the circuit will not light up at all (due to the reversed battery blocking all the current)
the bulb becomes dimmer
Kirchoff's 2nd law
I connected 2 batteries in series and another battery in parallel but in the opposing direction to a bulb. what will happen?
-the bulb becomes dimmer (due to the opposing current of the reversed battery)
or
-the circuit will not light up at all (due to the reversed battery blocking all the current)
or
-no effect at all. the bulb will shine as if there isnt any battery connected in parallel.
the bulb becomes dimmer
Law of superposition or
Kirchoff's 2nd law
lol i used to learn about that ketchup's law way back when i was in poly haha i think its time to do a bit of reading
superposition for 2nd case i can understand but..
The directed sum of the electrical potential differences around any closed circuit must be zero. -kirchoff's 2nd law
how is this law applicable to the 2 cases ah?
Originally posted by dibilo:superposition for 2nd case i can understand but..
The directed sum of the electrical potential differences around any closed circuit must be zero. -kirchoff's 2nd law
how is this law applicable to the 2 cases ah?
wah... hard to explain on line like that leh.... must draw a circuits.... This is A level physics liao...
wait ah... I see I got time then I draw some nice nice circuits for u