What is the value of the current through each lamp in a circuit with voltage U = 12V and power P = 48W?
a) 4A
b) 8A
c) 12A
d) 16A
e) 20A
a) The cur...
What is the value of the current through each lamp in a circuit with voltage U = 12V and power P = 48W? a) 4A b) 8A c) 12A d) 16A e) 20A a) The current through each lamp is 4A. b) The fuse must be dimensioned for a minimum value of 8A. c) The circuit has a total resistance of 3 ohms. d) The voltage drop across each lamp is 3V. e) The power dissipated in each lamp is 12W. a b c d e
A partir da fórmula P = U x I, podemos encontrar a corrente elétrica que passa por cada lâmpada. Substituindo os valores, temos:
48W = 12V x I
I = 48W / 12V
I = 4A
Portanto, a alternativa correta é a letra a) 4A.
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