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A bulb is rated (220V, 110W) is connected across a power supply of 110V. The power consumed by the bulb is ?
Verified Answer
A bulb is rated (220V, 110W) is connected across a power supply of 110...
P = V^2/R
If V = 220 V we have
100 W = 220^2/R
R = 220^2/100 Ω = 484 Ω. This is the resistance of the bulb.
When V = 110 V, power consumed = V^2/R = 110^2/484 = 25 W.
So, 25 W power is consumed when it is operated on 110 V.
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Most Upvoted Answer
A bulb is rated (220V, 110W) is connected across a power supply of 110...
Given, P=110w, V=220V ..
R=V^2÷P= 220×220÷110 ==440ohm
since after changing supply the resistance will remain constant. Now,R=440ohm V=110Vhence P=
V^2÷R= 110×110÷440=27.5W
R=V^2÷P= 220×220÷110 ==440ohm
since after changing supply the resistance will remain constant. Now,R=440ohm V=110Vhence P=
V^2÷R= 110×110÷440=27.5W
Community Answer
A bulb is rated (220V, 110W) is connected across a power supply of 110...
Given:
- Voltage rating of the bulb: 220V
- Power rating of the bulb: 110W
- Power supply voltage: 110V
To find:
- Power consumed by the bulb when connected to the 110V power supply.
Explanation:
Step 1: Calculate the resistance of the bulb:
Using Ohm's Law, we can calculate the resistance of the bulb using the formula:
Resistance (R) = Voltage (V) / Current (I)
Since the power rating is given, we can use the formula:
Power (P) = Voltage (V) * Current (I)
Rearranging the formula, we get:
Current (I) = Power (P) / Voltage (V)
Substituting the given values, we have:
Current (I) = 110W / 220V = 0.5A
Now, we can calculate the resistance:
Resistance (R) = Voltage (V) / Current (I) = 220V / 0.5A = 440Ω
Step 2: Calculate the power consumed:
The power consumed by the bulb can be calculated using the formula:
Power (P) = (Voltage (V))^2 / Resistance (R)
Substituting the given values, we have:
Power (P) = (110V)^2 / 440Ω = 27.5W
Conclusion:
The power consumed by the bulb when connected to a 110V power supply is 27.5W.
- Voltage rating of the bulb: 220V
- Power rating of the bulb: 110W
- Power supply voltage: 110V
To find:
- Power consumed by the bulb when connected to the 110V power supply.
Explanation:
Step 1: Calculate the resistance of the bulb:
Using Ohm's Law, we can calculate the resistance of the bulb using the formula:
Resistance (R) = Voltage (V) / Current (I)
Since the power rating is given, we can use the formula:
Power (P) = Voltage (V) * Current (I)
Rearranging the formula, we get:
Current (I) = Power (P) / Voltage (V)
Substituting the given values, we have:
Current (I) = 110W / 220V = 0.5A
Now, we can calculate the resistance:
Resistance (R) = Voltage (V) / Current (I) = 220V / 0.5A = 440Ω
Step 2: Calculate the power consumed:
The power consumed by the bulb can be calculated using the formula:
Power (P) = (Voltage (V))^2 / Resistance (R)
Substituting the given values, we have:
Power (P) = (110V)^2 / 440Ω = 27.5W
Conclusion:
The power consumed by the bulb when connected to a 110V power supply is 27.5W.
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A bulb is rated (220V, 110W) is connected across a power supply of 110V. The power consumed by the bulb is ?
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A bulb is rated (220V, 110W) is connected across a power supply of 110V. The power consumed by the bulb is ? for Class 10 2024 is part of Class 10 preparation. The Question and answers have been prepared according to the Class 10 exam syllabus. Information about A bulb is rated (220V, 110W) is connected across a power supply of 110V. The power consumed by the bulb is ? covers all topics & solutions for Class 10 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A bulb is rated (220V, 110W) is connected across a power supply of 110V. The power consumed by the bulb is ?.
A bulb is rated (220V, 110W) is connected across a power supply of 110V. The power consumed by the bulb is ? for Class 10 2024 is part of Class 10 preparation. The Question and answers have been prepared according to the Class 10 exam syllabus. Information about A bulb is rated (220V, 110W) is connected across a power supply of 110V. The power consumed by the bulb is ? covers all topics & solutions for Class 10 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A bulb is rated (220V, 110W) is connected across a power supply of 110V. The power consumed by the bulb is ?.
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