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Question -

A battery lights a bulb. Describe the energy changes involved in the process.



Answer -

When a bulb is connected to a battery, then the energy of the battery is transferred into voltage. Once the bulb receives this voltage, then it converts it into light-weight and warmth energy. Hence, the transformation of energy within the given situation may be shown as:
Chemical Energy → Electrical Energy → Light Energy + Heat Energy.
E k = K.E. of the thing moving with a rate, v
K.E. once the thing was moving with a rate five m s-1
1 (E k) 5 = two × twenty × (5)
= 250 J
Kinetic energy once the thing was moving with a rate two m s-1 one
(E k) 2 = two x twenty × (2)
= 40 J

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