- #1

- 23

- 0

I = C*(dV/dt)

V = IR, so I = V/R

V/R = C*(dV/dt)

(V*dt) = R*C* dV

Integrate both sides.

V*t = R*C*V

t = R*C which means that R = t/C

That makes sense, since people talk about a time constant, but I just want to be sure.

- Thread starter checkmatechamp
- Start date

- #1

- 23

- 0

I = C*(dV/dt)

V = IR, so I = V/R

V/R = C*(dV/dt)

(V*dt) = R*C* dV

Integrate both sides.

V*t = R*C*V

t = R*C which means that R = t/C

That makes sense, since people talk about a time constant, but I just want to be sure.

- #2

Simon Bridge

Science Advisor

Homework Helper

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Note:

Your integration assumes that V is a constant with time, but your first equation assumes that dV/dt is not zero, therefore V does vary with time. This is a contradiction (unless I=0). Try using lower case for variable voltages and currents.

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