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Figure shows a simple fire alarm

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asked Aug 5, 2021 in Physics Form 2 by anony mous

Figure shows a simple fire alarm
figure showing simple fire alarm
Explain how the alarm functions

magnetic effect of electric current

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answered Aug 5, 2021 by anony mous

When there is fire, temperature rises, mercury expands and touches terminal X: circuit is completed, current flows and the bell rings.

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magnetic effect of electric current

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The diagram below shows a suspended uniform beam of weight 4N in equilibrium under the action of the force shown. The weight of the magnet is 8N.

asked Jul 13, 2021 in Physics Form 1 by anony mous

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