Physics, 29.04.2021 15:00 kammie89

7. The diagram shows a design for an electrically operated model railway signal a) Explain, step by step, how it works.
b) Explain how, by adding a scale and a spring, you could use it as an ammeter.

(Diagram in attachment)

7. The diagram shows a design for an electrically operated model railway signal

a) Explain, step

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7. The diagram shows a design for an electrically operated model railway signal a) Explain, step b...

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