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प्रश्न
Write symbol and state function of following component in an electric circuit : key
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उत्तर
Key symbol : 
; It is used to switch the current on or off in the circuit.
संबंधित प्रश्न
Write symbol and state function of following component in an electric circuit :
rheostat
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In which direction conventional current flows?
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In which direction electronic current flows?
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