Question

In the circuit of the figure ? = 2.10 kV, C = 7.20 ?F, R? = R? = R? = 0.980 M?. With C completely uncharged, switch S is suddenly closed (at t = 0). At t = 0, what are (a) current i? in resistor 1, (b) current i? in resistor 2, and (c) current i? in resistor 3? At t = ? (that is, after many time constants), what are (d) i?, (e) i?, and (f) i?? What is the potential difference V? across resistor 2 at (g) t = 0 and (h) t = ?? 

          In the circuit of the figure ? = 2.10 kV, C = 7.20 ?F, R? = R? = R? = 0.980 M?. With C completely uncharged, switch S is suddenly closed (at t = 0). At t = 0, what are (a) current i? in resistor 1, (b) current i? in resistor 2, and (c) current i? in resistor 3? At t = ? (that is, after many time constants), what are (d) i?, (e) i?, and (f) i?? What is the potential difference V? across resistor 2 at (g) t = 0 and (h) t = ??
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In the circuit of the figure ? = 2.10 kV, C = 7.20 ?F, R? = R? = R? = 0.980 M?. With C completely uncharged, switch S is suddenly closed (at t = 0). At t = 0, what are (a) current i? in resistor 1, (b) current i? in resistor 2, and (c) current i? in resistor 3? At t = ? (that is, after many time constants), what are (d) i?, (e) i?, and (f) i?? What is the potential difference V? across resistor 2 at (g) t = 0 and (h) t = ??

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University Physics with Modern Physics
University Physics with Modern Physics
Hugh D. Young 14th Edition
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In the circuit of the figure, E = 2.10 kV, C = 7.20 μF, R1 = R2 = R3 = 0.980 MΩ. With C completely uncharged, switch S is suddenly closed (at t = 0). At t = 0, what are (a) current i1 in resistor 1, (b) current i2 in resistor 2, and (c) current i3 in resistor 3? At t = ∞ (that is, after many time constants), what are (d) i1, (e) i2, and (f) i3? What is the potential difference V2 across resistor 2 at (g) t = 0 and (h) t = ∞?
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Transcript

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0:00 Hello here.
00:02 Voltage of the battery is 2 .10 kilovolts and each of the resistances is 0 .980 mega -ooms.
00:15 Let's label it as sr.
00:18 First we have to find current i1 through the resistor r1.
00:22 Let's make the sketch for the moment at time of 0.
00:47 Now let's calculate the equivalent resistance.
00:50 That is r1 plus the following.
00:56 And that is 1 .5r.
01:03 Therefore we can determine this i1.
01:06 I1 is emf over equivalent resistance.
01:25 Let's calculate it.
02:16 Now in equation b we have the determined i2.
02:24 So here first let's calculate ur2.
02:27 That is emf minus i1 r1.
03:00 That is 7 times 10 power by 2.
03:06 Walls and now we can determine i2 and now in question c we have to determine i3 so that is i1 minus i2 and now we can move on to question d so now time is infinity and in question d we have to find current i1 so when time is infinity r1 is in psyri with r2...
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