1.

A torch bulb is rated at 3v and 600ma . calculate its power ,resistance,energy consumed if it lighted for 4hrs

Answer»

P=V*I
So PUTTING values we get P=1.8
R=V/I=5
and P=E/t. So rearranging and SUBSTITUTING we get , E=7.2.I think it HELPED. If it is wrong ,I am SORRY



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