WebSix-mark questions are extended open response questions. These require longer answers than the structured questions with fewer marks. It is wise to plan your answer rather than rushing straight... WebGeorge Ohm discovered that the potential difference of a circuit corresponds to the current flowing throughout a circuit and that a circuit sometimes resists the flow of electricity. The said scientist hence came up with a rule for working out resistance, shown on the image on the side: Need help with your writing assignment?

Electric current and potential difference - BBC Bitesize

WebAs the work is positive or negative (depending on the direction taken), there is no need to define a "positive direction", but the potential difference depends on the order of r → 1 and r → 2 (that is: if the potential difference moving from 1 to 2 is positive, the one for moving from 2 to 1 will be its opposite). My try of a precise definition: WebA current that continuously changes its direction, going back and forth around a circuit An a.c. power supply has two identical terminals that switches between positive and … knights net highlands

2.1.2 Charge & Current - Save My Exams

WebStudents should be taught about: •electric current, measured in amperes, in circuits, series and parallel circuits, currents add where branches meet and current as flow of charge •potential difference, measured in volts, battery and bulb ratings; resistance, measured in ohms, as the ratio of potential difference (p.d.) to current •differences in … WebWeb Learn how electric circuits and how to measure current and potential difference with BBC Bitesize KS3 Science. Visit Site Electric Current And Potential Difference - BBC Bitesize Web Electric circuits. The simplest complete circuit is a piece of wire from one end of a battery to the other. red crew neck t shirt for women