I've just begun learning physics and I'm unsure how to work out this question. Could you please explain your answer as I'm a beginner :) it will be much appreciated! Thanks!
Question:
The alternator of a car being driven at night with the headlights on is producing a 50A current at an electromotive force of 12V.
a) how many coulombs of charge flow from the alternator each second?
b) how many joules of energy does each coulomb of charge obtain?
c) how many joules of energy does the alternator produce each second?
d) where does the energy go?
Question:
The alternator of a car being driven at night with the headlights on is producing a 50A current at an electromotive force of 12V.
a) how many coulombs of charge flow from the alternator each second?
b) how many joules of energy does each coulomb of charge obtain?
c) how many joules of energy does the alternator produce each second?
d) where does the energy go?
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a) Q = It = 50*1 = 50 coulombs (current is the rate of flow of charge)
b) E = QV = 1*12 = 12 joules (Q is charge and V is EMF)
c) each second the alternator produces 50*12 = 600 joules (as 50 coulomb are used in 1 second)
d) in powering the bulbs of the car and partly dissipated
b) E = QV = 1*12 = 12 joules (Q is charge and V is EMF)
c) each second the alternator produces 50*12 = 600 joules (as 50 coulomb are used in 1 second)
d) in powering the bulbs of the car and partly dissipated