according to ohm's law the current I is equal to the voltage V divided by the resistence R
1 answer
http://www.google.com/imgres?imgurl=http://phet.colorado.edu/sims/ohms-law/ohms-law-screenshot.png&imgrefurl=http://phet.colorado.edu/en/simulation/ohms-law&h=191&w=300&sz=12&tbnid=jMGJmX46ooHY4M:&tbnh=73&tbnw=114&prev=/search%3Fq%3Dohm's%2Blaw%26tbm%3Disch%26tbo%3Du&zoom=1&q=ohm's+law&usg=__arrrdESjh9ihB7y6ovexjRlgPfQ=&docid=guTg0EkvBscs3M&sa=X&ei=g5fkUb7oCqiSyQH-64DoDQ&ved=0CEQQ9QEwAw&dur=717