level: current, voltage and resistance
Questions and Answers List
level questions: current, voltage and resistance
| Question | Answer |
|---|---|
| NA | NA |
| NA | NA |
| how to find power of cirucit | voltage x current |
| what does current mean | rate of flow of charge, in metals --> flow of electrons |
| how to find charge (c) | current x time |
| what does voltage mean | force measure in volts measure by a voltmeter, must be added in parellel |
| what is a EMF | force measure in volts, for electrical sources of energy. |
| what does resistacne (ohms) mean | how easily current flows in a current. |
| how to find resistance | voltage / current |
| what does an increase resistance do to the current | it reduces the current |
| how does length affect resistance of wire | increase length = increase resistance |
| how does diameter affect resistance of wire | inversely proportianal to diameter of wire, 1/2 cross section of wire = double of the resistance |
| how do electric circuits transfer energy | energy from cell or power source transfer to ciruit componenets |
| how to find power of cirucit | voltage x current |