p1 resistance
Cards (21)
- What should you be able to describe by the end of the video?
- What percentage of exam marks come from required practicals?
- What factors are being investigated in the practical?
- What equipment is used in the resistance investigation?
- What does the ammeter measure in the circuit?
- What does the voltmeter measure across the wire?
- How do you calculate resistance in the circuit?
- What is the relationship between resistance and the length of the wire?
- How can you increase the length of the wire in the circuit?
- What does the graph of resistance versus length show?
- What is a zero error in measuring instruments?
- Why is zero error considered a systematic error?
- How should you adjust readings to account for zero error?
- What causes zero error in this experiment?
- How does heating affect resistance in the wire?
- What can be done to reduce heating effects in the wire?
- When should the current be turned on during the experiment?
- How does a variable resistor work?
- What happens to the lamp when resistance is increased using a variable resistor?
- Where can you find questions on required practicals?
- What is the main focus of the practical discussed in the video?