Donald Trumps Boys Dance Google tia novi (Student Section: 6) AP Physics 16.17 e

Question

Donald Trumps Boys Dance Google tia novi (Student Section: 6) AP Physics 16.17 e Messages courses Hew Legsr Course contents. ....ch2s crauts The figure shows the drevit of a fiashing lamp C LC circut Ike to bamels at highway constructen stes me nuorescent lamo of sewivibe capacitance) connected Aavalle across the ap ceor c of a RC circuit. There is a cument through the lamp only when the potential difference across R that two fieshes per second are needed. For a lamp with breakdown voltage vi 7s.avags,a v deal battery, and a o 20o apacitor what should be the resistance R of the reustart Tries 1/7 Previous Tres Send Feedback

Explanation / Answer

Here, for two flashes per second

the capacitor should charge to VL two times in each sec

hence , time taken to reach VL

t = 1/2 s

Now, as V = E * (1 - e^(-t/(R * C)))

75 = 95 * (1 - e^(-0.5/(R * 0.280 *10^-6)))

solving for R

R = 1.15 *10^6 Ohm

the resistance R needed is 1.15 *10^6 Ohm

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