AN electric Lamb is labelled 12V ,36 w . This indicates that it should be used wth a 12v Supply. What other information does the label provide
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The lamp consumes power of 30 watt, when connected with 12V supply. (1)Power, P = V^2/R, where R is the Resistance of the Bulb filament. R= V^2/P = 12×12/36 =4 Ohms.
(2) Current drawn by the bulb when connected to 12 V supply is V/R = 12/4 = 3 ampere.
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