Multiple choice How many 100 watt bulbs may be safely used on 220 volt with five amperes fuse? 22 11 10 5 Reveal answer Fill a bubble to check yourself B Correct answer Explanation We know, P=VI For ‘n’identical bulbs, Total power = n x 100 watts n *100 = 220 volts x 5 amperes n = 220 x 5 / 100 =11