P5.3 Flashcards
To measure the PD between any two points,a voltmeter must be connected __________ to a component
Parallel
When two or more components are connected in series to a battery the current through each component __________
Stays the same
When two or more components are connected in series to a battery the PD across components ___________
Why?
Add up to the PD across the battery
Because work done on each unit of charge by the battery must equal work done by it on the circuit components
When two or more components are connected in series to a battery, PD is largest across component with the ________ resistance than through a _______ one
Largest,small
When two or more components are connected in series to a battery, a change in the resistance of one component will result in what?
A change in the PD across all the components
When several components are connected in parallel directly to a battery, the PD across each component is ______ to the PD of the battery
Equal
When several components are connected in parallel directly to a battery,the current through each component is ______ as if it was the only component present
The same as
When several components are connected in parallel directly to a battery,the total current from (and back to) the battery is ______ through each components
The sum of the currents
When several components are connected in parallel directly to a battery,the current is largest through the component with the _________ resistance,because the same battery voltage causes a _____ current to flow through a ______ resistance than through a ______ one
Smallest
Larger
Smaller
Larger
Voltage across a battery (V) provides a measure of what?
The ‘push’ of the battery on the charges in the circuit
Why are bulbs in series dimmer?
2
Current going through them is smaller because two bulbs in series have a higher resistance than a single bulb
•each charge only gives up some of its energy in each bulb-the potential difference across each bulb is smaller
In a series circuit, the current is
The same everywhere
In a series circuit, the PD is
Split between components
In a series circuit,the total resistance is
Bigger than the individual resistance
In a parallel circuit, the current
Splits between branches
