Resistance

These diagnostic questions and response activities (contained in the zip file) support students in being able to:

• Describe the effect on a simple circuit of changing the voltage of the battery.
• Describe resistance (in Ohms, Ω) as a measure of how hard it is for charge to flow.
• Explain why thinner wires have a higher resistance than thicker wires of the same length and material.           
• Explain why longer wires have a higher resistance than shorter wires of the same length and thickness.       
• Explain how the size of current is affected when both voltage and resistance are changed at the same time.

 The resources include details of common misconceptions and a summary of the research upon which the resources are based.

Download the zip file for all the questions and activities.

More resources like this can be found on the BEST webpage:  Best Evidence in Science Teaching