I watched a Youtube video yesterday where (Robert Murray Smith)showed he had built a 10,000 Farad super-capacitor,I think he said it was 3.7 volts and 38,000 joules? What Id like to know is what the amp hours would be with those specs? Ive tried to work it out using ohms law but how to calculate the equation escapes me? Ive looked up lots of articles on ohms law but they never explain adequately (to me at least) how they come to the conclusion?