A torch bulb is rated 3.0V and 600MA. Calculate - it's power, it's resistance, the energy consumed if it is lighted for 4 hours.
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Power = Vi
= 3.0 volts × 600 × 10⁶ A
= 1.8 billion watts
Resistance = V / i
= 3.0 volts / (600 × 10⁶ A)
= 5.0 × 10^-9 ohms
Energy = Power × Time
= 1.8 billion watts × 4 hour
= 7.2 × 10⁹ Watt hour
= 7.2 × 10⁹ × 3600 joules
= 2.592 × 10¹³ joules
= 3.0 volts × 600 × 10⁶ A
= 1.8 billion watts
Resistance = V / i
= 3.0 volts / (600 × 10⁶ A)
= 5.0 × 10^-9 ohms
Energy = Power × Time
= 1.8 billion watts × 4 hour
= 7.2 × 10⁹ Watt hour
= 7.2 × 10⁹ × 3600 joules
= 2.592 × 10¹³ joules
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Its power will be 1.8 billion watts
Its resistance will be 5×10^-9. ohms
2.592×10^13 joules will be the energy consumed
hope these are the correct answers
Its resistance will be 5×10^-9. ohms
2.592×10^13 joules will be the energy consumed
hope these are the correct answers
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