Eight identical bulbs are connected in series across a 120-V line. Part A What i

ID: 1536313 • Letter: E

Question

Eight identical bulbs are connected in series across a 120-V line.

Part A

What is the voltage across each bulb?

Express your answer to two significant figures and include the appropriate units.

V=?

Part B

If the current is 0.56 A , what is the resistance of each bulb?

Express your answer to two significant figures and include the appropriate units.

R=?

Part C

If the current is 0.56 A , what is the power dissipated in each bulb?

Express your answer to two significant figures and include the appropriate units.

P=?

here 8 bulbs which are identical are connected in series

V = 120 volt

(a) there is identical bulbs so voltage across each bulbs are equal

so the voltage across each bulb V = 120 / 8 = 15 volt

(b) if current I = 0.56 Amp

so as we know that the current will same in series combination

so the current in each bulb is 0.56 Amp

so the resistance of each bulb R = V / I

R = 15 / 0.56 = 26.785 ohm Ans

so the power dissipited in each bulb is same which is given by

P = V x I

= 15 x 0.56 = 8.4 J Ans

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