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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
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Increase the number of turns on the coil.
- More turns in the coil increase the magnetic field interaction, leading to higher voltage output.
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Use a more powerful magnet.
- A stronger magnet enhances electromagnetic induction, which increases the generated voltage.
Step 3
Describe the difference between charge movement in a direct current and in an alternating current.
Answer
In direct current (DC), electric charge flows in one direction continuously. This means that the movements of electrons are steady and consistent.
In contrast, alternating current (AC) causes the direction of electric charge to change periodically. The electrons move first in one direction and then reverse, which leads to a change in voltage over time.