Question

In the movie Back to the Future, time travel is made possible by a flux capacitor, which generates 1.21 GW of power. Assuming that a 3.00-F capacitor is charged to full charge with a 12.0-V car battery and is discharged through a resistor, what is the resistance necessary to produce a peak power output of 1.21 × 109 W in the resistor?

a) 3.57 × 10^-7 ohm
b) 9.92 × 10^-9 ohm
c) 8.72 × 10^-8 ohm
d) 1.79 × 10^-7 ohm
e) 1.19 × 10^-7 ohm

Answer 1

@Vincent-Lyon.Fr need some help here

Answer 2

@Esraa momkn tshofely de ??

Answer 3

@ash2326 need ur help

Answer 4

@Aditya790

Answer 5

@marwa.ally It's given that the capacitor 3 farads is fully charged with 12 volts battery, so the voltage across the capacitor is 12 volts!!!
Do you understand this?

Answer 6

@marwa.ally !!!

Answer 7

yeah the the pw= v^2 /r
then r = v^2/ pw
r = 144/102*10^9 = 1.19*10^-7 which is no. (e)

Answer 8

Yay:D You got it right:D:D

Answer 9

^_^ thnx