Diagnostic questions on series circuits
What the activity is for
The diagnostic questions can be used to check the pupils' understanding of key ideas introduced in this episode.
What to prepare
- printed copies of these diagnostic questions
What happens during this activity
The questions might be used for homework or as the basis for discussion in class.
Resistors in series: designed to probe pupils' understanding of how voltage is shared between two identical resistors in series.(a) V1 reads 3 volt (b) The battery voltage is shared, half across each resistor. Different batteries: probes pupils' understanding of the relationship between the battery voltage and the total voltage across external resistors.
- V1 is 6 volt; V2 is 3 volt
Different resistors: probes pupils' understanding of how voltage is shared between unequal resistors.
- V1 is 4 volt; V2 is 5 volt; V3 is 4 volt
Bigger resistance: probes pupils' understanding of how voltage is shared between unequal resistors.
- V1 reads between 6 volt and 3 volt
- The battery voltage is shared, with the larger share across the larger resistor.