Given the current i and voltage v of a circuit element, the power p and energy w are given by:

• A. \(p = \int_0^t \ pd \tau\)w = v.i.t
• B. p = v.i.t and \(w = \int_o^t \ pd\tau\)
• C. p = v.i\(w = \int_0^t \ pd\tau\)
• D. \(p = \int^t_0 pd\tau\)w = v.i