The capacitor in the flash of a disposable camera has a value of 165 μF. 1) What is the resistance of the filament in the bulb i
1 answer:
Answer:
3.8 x 10⁴ Ω
Explanation:
C = Capacitance = 165 μF
R = resistance of the filament = ?
t = time taken to charge the capacitor = 10 s
Q₀ = maximum charge stored by capacitor
Q = charge stored by capacitor at time "t" = 0.80 Q₀
T = Time constant
Charge stored by capacitor at any time is given as
T = 6.21 s
Time constant is given as
T = RC
6.21 = R (165 x 10⁻⁶)
R = 3.8 x 10⁴ Ω
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