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level: Current, potential difference, power and resistance

Questions and Answers List

level questions: Current, potential difference, power and resistance

QuestionAnswer
describe voltage in a series circuitvoltages in a series circuit combine to give the supply voltage
describe voltage in a parallel circuitvoltage across branches is the same
describe current in a series circuitcurrent is the same at all points
describe current in a parallel circuitcurrents in parallel branches combine to give the supply current
what are potential divider circuitscircuits in which voltage is split between two components
what is a wheatstone bridge circuita circuit where two potential divider circuits are connected in parallel
what are potential divider circuits used forto provide a specific voltage to a component
how do you calculate the voltage across the voltmeter in a wheatstone bridgelook at the terminals of the battery to identify which way current flows calculate the voltage across the two resistors that current first passes through (use potential divider formula or ratios) find the difference between the two voltages
what does it mean when the voltmeter on a wheatstone bridge reads 0?the wheatstone bridge is balanced r1/r2=r3/r4