Question

how much current will an electricbulbdraw from a 220 v source if resistance of bulb filament is 1200 ohms​

Answer 1

(i)Given, Voltage, V=220V and Resistance, R=1200 ohm

V=IR  

I=V/R=220/1200=0.1833A

(ii) V=220V R=100 ohm

I=V/R=220/100=2.2A

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