What is the expression for the current in the R-C circuit?
1
\(i = \left( {\frac{V}{R}} \right)\exp \left( {\frac{{ - t}}{{RC}}} \right)\)
2
\(i = \left( {\frac{V}{R}} \right) - {\rm{\;exp}}\left( {\frac{{ - t}}{{RC}}} \right)\)
3
\(i = \left( {\frac{V}{R}} \right) - {\rm{\;exp}}\left( {\frac{t}{{RC}}} \right)\)
4
\(i = \left( {\frac{V}{R}} \right)\;\exp \left( {\frac{{ t}}{{RC}}} \right)\)