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The diagram shows a simple generator connected to a lamp - Edexcel - GCSE Physics - Question 6 - 2013 - Paper 1
Question 6
The diagram shows a simple generator connected to a lamp. The magnet is made to spin at a steady speed. The ammeter gives a reading of 1.5 A. The voltmeter gives a ... show full transcript
Worked Solution & Example Answer:The diagram shows a simple generator connected to a lamp - Edexcel - GCSE Physics - Question 6 - 2013 - Paper 1
Step 1
Step 2
State two changes to the design of the generator that would give a larger output power for the same speed of rotation.
Answer
- More turns on the coil: Increasing the number of turns on the coil can enhance the magnetic field interaction, leading to a larger output voltage.
- More powerful/stronger magnets: Using stronger magnets improves the strength of the magnetic field, which in turn can increase the generated power.
Step 3
Describe the difference between charge movement in a direct current and in an alternating current.
Answer
In direct current (DC), the charge moves in one direction only, maintaining a constant polarity. This means that the flow of electric charge is steady and unidirectional.
In contrast, alternating current (AC) involves the charge movement changing direction periodically. This results in the current flowing back and forth, typically alternating its direction in a sinusoidal pattern.