Analysing
Question;
Illustrate and explain what would occur in a series circuit if one of the bulbs broke.
Illustrate and explain what would occur in a series circuit if one of the bulbs broke.
Phase 1
In a class discussion compare the series circuit and the parallel circuit. Provide for the students an illustration of both circuits. In groups the students need to address these problems;
1. Distinguish similarities and differences of Series and Parallel circuits.
2. Examine which circuit would use the least amount of electricity.
3. Analyse which circuit would be best suited to a household situation.
4. Draw a conclusion as to when and why a series circuit might be used and when a parallel circuit might be used.
Teacher Information
In a series circuit the more resistance that is in a circuit such as light bulbs the less current travels through the circuit thus making the light dimmer. The current becomes equally divided between the resistors as it travels through the circuit. The battery out put is nine volts so when there is two resistors on the circuit they share the voltage which becomes 4.5 volts each, if there were three resistors they would have an output of three volts each still adding to the nine volts of output from the battery. Where as with a parallel circuit when two resistors are placed on the circuit the amps increase, they double from 0.9 amps to 1.8 amps the current still flows quickly and the light remains as bright as if there was only one resistor on the circuit. However by increasing the amps and voltage output it will increase the amount of energy that is used which will cost more money to run in a house hold situation.
Phase 2
Each students will draw an illustration of a series circuit with an explanation of how a series circuit works and fails to work when a bulb breaks. ( The students books will be collected after this task to check for understanding).
In a class discussion compare the series circuit and the parallel circuit. Provide for the students an illustration of both circuits. In groups the students need to address these problems;
1. Distinguish similarities and differences of Series and Parallel circuits.
2. Examine which circuit would use the least amount of electricity.
3. Analyse which circuit would be best suited to a household situation.
4. Draw a conclusion as to when and why a series circuit might be used and when a parallel circuit might be used.
Teacher Information
In a series circuit the more resistance that is in a circuit such as light bulbs the less current travels through the circuit thus making the light dimmer. The current becomes equally divided between the resistors as it travels through the circuit. The battery out put is nine volts so when there is two resistors on the circuit they share the voltage which becomes 4.5 volts each, if there were three resistors they would have an output of three volts each still adding to the nine volts of output from the battery. Where as with a parallel circuit when two resistors are placed on the circuit the amps increase, they double from 0.9 amps to 1.8 amps the current still flows quickly and the light remains as bright as if there was only one resistor on the circuit. However by increasing the amps and voltage output it will increase the amount of energy that is used which will cost more money to run in a house hold situation.
Phase 2
Each students will draw an illustration of a series circuit with an explanation of how a series circuit works and fails to work when a bulb breaks. ( The students books will be collected after this task to check for understanding).
Phase 3
Watch the you tube clip to analyse the construction of a series circuit and a parallel circuit. Students need to take notes of the vital steps need to create a series circuit and a parallel circuit.
Watch the you tube clip to analyse the construction of a series circuit and a parallel circuit. Students need to take notes of the vital steps need to create a series circuit and a parallel circuit.