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Course: Class 12 Physics (India) > Unit 3

Lesson 4: Electric power and DC circuits
Science
Class 12 Physics (India)
Current electricity
Electric power and DC circuits
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Bulbs connected in series or parallel

Google Classroom

Problem

Adam has two bulbs of the following power ratings.
BulbPower rating
A6.0 V/18 W
B6.0 V/4.0 W
He connects them in series across a 220 V battery, as shown.
What is the power dissipated by each bulb?
  • Power dissipated by bulb A=
    • Your answer should be
    • an integer, like 6
    • a simplified proper fraction, like 3/5
    • a simplified improper fraction, like 7/4
    • a mixed number, like 1 3/4
    • an exact decimal, like 0.75
    • a multiple of pi, like 12 pi or 2/3 pi
    W
  • Power dissipated by bulb B=
    • Your answer should be
    • an integer, like 6
    • a simplified proper fraction, like 3/5
    • a simplified improper fraction, like 7/4
    • a mixed number, like 1 3/4
    • an exact decimal, like 0.75
    • a multiple of pi, like 12 pi or 2/3 pi
    W