iy Tupiale the wire with a longer one. 2. Some light bulbs are connected in para

Question

iy Tupiale the wire with a longer one. 2. Some light bulbs are connected in parallel to a 120 V source as shown in dissipates an average power of 75 W. The circuit has a fuse F that burn circuit exceeds 12 A. (a) Are these bulbs wired in Determine the maximum number of bulbs, which can be used in this circuit without (o) determine the current that flows through each of the light bulbs; and (d) w single light bulb? the figure. Each bulb s out when the current in the parallel (check to answer)? (b) Series or burning out the fuse; hat is the resistance of a 120 V

Explanation / Answer

a) all the bulbs are connected in parallel per the circuit diagram given

b)power dissipated in each bulb = 75 W

potential difference across each bulb = 120 V

resistance of each bulb = 1202/75=192 Ohms

current in each bulb = 120/192=0.625 amperes

let maximum number of bulbs that can be connected in parallel=n

0.625*n=12

n=19.2

Therefore,maximum 19 bulbs can be connected

c)as determined in part b,current in each bulb = 0.625 amperes

d)resistance of single light bulb=192 Ohms

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