|Shikha went to the market with her brotherly metro. While passing through a gateway for security check she heard a long beep, as it was a metal detector which beeped. She was curious and asked about understood the reason of beeping from her class teacher. Read the above passage and answer the following questions :|
|(i) On which principle does a metal detector work? What causes production of a beep in this case?|
|(ii) Can the voltage drop across the inductor or the capacitor in a series L-C-R circuit be greater than the applied voltage of the AC source? Justify your answer.|
|(iii) Write one value displayed by Shikha.|
|(i) A metal detector works on the principle of resonance in AC circuits. Whenever a person walks through the gate of a metal detector, the impedance of the circuit changes. It results in appreciable change in current in circuit which causes production of sound in the form of a beep.|
|(ii) Yes, because|
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