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## Homework Statement

For the RC Circuit (R = 1M Ohm, C = 1 Micro Farad and E = 30 V) find the potential difference across the resistor 10 sec after the switch is closed.

## Homework Equations

V = E (1 - e^ -t/RC)

## The Attempt at a Solution

I use the above equation but I get it wrong (it should be 4V) I think I might be putting in something wrong.