The force that we think of when we try to lift that parallel push-pull boat anchor is the mass times the acceleration of gravity, which happens to be 9.8 meters per second squared. Resistance ( W) – is the ratio of potential difference across a component to the current flowing through it, it is measure in ohms ( W). It turns out that a kilogram is a unit of mass. W = work done or energy transferred in joules, J.For example, the voltage provided by a sufficiently. ( 1 V = 1 J C -1) Potential difference in a circuit is measured using a voltmeter which is placed in parallel with the component of interest in the circuit. Similarly, work can be done by an electric current driven by the potential difference provided by a battery. A potential difference of 1 V means that 1 joule of work is done per coulomb of charge. Potential difference is the work done per unit charge.Potential difference (V) – is measured in volts (V). ( 1 A = 1 C s -1 ) Current is measured in a circuit using an ammeter which is placed in series with the component of interest in the circuit. A current of 1 A means that 1 coulomb of charge flows past a point in a circuit every second. Quora Answer (1 of 3): There are many ways to derive it. Current is the rate of flow of charge. Derive the equation: electrical work done is equal to the product of voltage, current and time.A single electron carries a charge of 1.6 x 10 -19 C.Ĭurrent (I) – is measured in amperes (A). Charge, Current & Potential DifferenceĬharge (Q) – charge is measured in coulombs (C). However the electrons are flowing around the circuit in the opposite direction from the negative (-) side of the cell to the positive (+). Circuit Symbols – you met these circuit symbols in GCSE Physics.Ĭonventional current flows around a circuit from the positive (+) side of the cell to the negative (-).
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |