5 The photograph shows a small generator - Edexcel - GCSE Physics - Question 5 - 2012 - Paper 1
Question 5
5 The photograph shows a small generator.
When the handle is turned the current produced lights a lamp.
(a) (i) Complete the sentence by putting a cross (✗) in the ... show full transcript
Worked Solution & Example Answer:5 The photograph shows a small generator - Edexcel - GCSE Physics - Question 5 - 2012 - Paper 1
Step 1
Complete the sentence by putting a cross (✗) in the box next to your answer.
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Answer
The correct answer is D: 'is usually alternating in direction'. This reflects the nature of current produced by generators, which often create alternating current (AC).
Step 2
State the unit in which electric current is usually measured.
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Answer
The unit in which electric current is usually measured is the Ampere (A).
Step 3
Describe what happens inside the generator to produce the current.
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Answer
Inside the generator, there is a conductor, typically a coil of wire, that is rotated within a magnetic field. As the coil rotates, the magnetic field induces a voltage across the coil due to electromagnetic induction. This process causes the flow of electrons, resulting in electric current. The direction of the current changes as the coil continues to rotate, which leads to the production of alternating current.
