Series parallel revised
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There are two types of electrical circuits: series and parallel. In a series circuit, current has one path through components and back to the source. If one component fails, the entire circuit fails. In a parallel circuit, current divides and takes multiple paths, so if one component fails others still work. Current is measured with an ammeter in series, and voltage is measured with a voltmeter across components. Current is the same throughout a series circuit but divides in a parallel circuit, while voltage divides in a series circuit but is the same in a parallel circuit.
Series parallel revised
- 1. types of circuit There are two types of electrical circuits; SERIES CIRCUITS PARALLEL CIRCUITS
- 2. SERIES CIRCUITS Current has only one route- from the source through several loads and back to the source. If one bulb ‘blows’ it breaks the whole circuit and all the bulbs go out.
- 3. measuring current Electric Current (I) is measured using an ammeter which is connected in series with the loads. A
- 4. PARALLEL CIRCUITS The current from the source divides to each load in separate paths and goes back to the source. If one bulb ‘burns out’ the other bulbs or loads will still work.
- 7. measuring current This is how we draw an ammeter in a circuit. A A SERIES CIRCUIT PARALLEL CIRCUIT
- 8. measuring current SERIES CIRCUIT current is the same at all points in the circuit. PARALLEL CIRCUIT 2A 2A 2A current is shared between the components 2A 2A 1A 1A
- 9. copy the following circuits and fill in the missing ammeter readings. ? ? 4A 4A 4A ? 3A 1A ? 1A ? 3A 1A
- 10. measuring voltage The ‘electrical push’ which the cell gives to the current is called the voltage. It is measured in volts (V) on a voltmeter V
- 12. measuring voltage Unlike an ammeter a voltmeter is connected across the components The term Potential Difference (pd) refers to voltage.
- 13. measuring voltage This is how we draw a voltmeter in a circuit. V V SERIES CIRCUIT PARALLEL CIRCUIT
- 14. V measuring voltage V V V
- 15. series circuit • voltage is shared between the components 1.5V 1.5V 3V
- 16. parallel circuit • voltage is the same in all parts of the circuit. 3V 3V 3V
- 17. measuring current & voltage copy the following circuits on the next two slides. complete the missing current and voltage readings. remember the rules for current and voltage in series and parallel circuits.
- 18. measuring current & voltage 6V V V 4A A A a)
- 19. measuring current & voltage 6V 4A A V V A A b)
- 20. measuring current & voltage V 2A A 4.5 V V 1 A A c)
- 21. measuring current & voltage 12 V V V 2A A 1 A A d) V A
- 22. __V __V 3A __V __A __V __V __A __A __A 24 V __V e)