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Two electric bulb one rated 60 watt and 220 V and other 100 watt and 220 V are connected parallel to 220 V main supply. Calculate the current drawn from the supply line?
Most Upvoted Answer
Two electric bulb one rated 60 watt and 220 V and other 100 watt and 2...
Power = P = 100 W
Voltage = V = 220v
Resistance = R
P = V²/R
100 = 220 ×220/R
R = 220 × 220/100
= 484 Ω
Power = P = 60 W
Voltage = V = 220v
Resistance = R
P = V²/R
60 = 220 × 220/R
R = 220× 220/60
= 806.7 Ω
As the resistors are connected in parallel ,
total resistance = 1/R
1/R = 1/484 + 1/806.7
= 806.7 + 484/484×806.7
= 1290.7/390442.8
R = 390442.8/ 1290.7 = 302.5 ohms
Total resistance = 302.5 Ω
I = current
V = IR
220 = I × 302.5
I = 220/302.5
= 0.73 A
The current drawn is 0.73 A
Voltage = V = 220v
Resistance = R
P = V²/R
100 = 220 ×220/R
R = 220 × 220/100
= 484 Ω
Power = P = 60 W
Voltage = V = 220v
Resistance = R
P = V²/R
60 = 220 × 220/R
R = 220× 220/60
= 806.7 Ω
As the resistors are connected in parallel ,
total resistance = 1/R
1/R = 1/484 + 1/806.7
= 806.7 + 484/484×806.7
= 1290.7/390442.8
R = 390442.8/ 1290.7 = 302.5 ohms
Total resistance = 302.5 Ω
I = current
V = IR
220 = I × 302.5
I = 220/302.5
= 0.73 A
The current drawn is 0.73 A
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Two electric bulb one rated 60 watt and 220 V and other 100 watt and 220 V are connected parallel to 220 V main supply. Calculate the current drawn from the supply line?
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Two electric bulb one rated 60 watt and 220 V and other 100 watt and 220 V are connected parallel to 220 V main supply. Calculate the current drawn from the supply line? 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 Two electric bulb one rated 60 watt and 220 V and other 100 watt and 220 V are connected parallel to 220 V main supply. Calculate the current drawn from the supply line? covers all topics & solutions for Class 10 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Two electric bulb one rated 60 watt and 220 V and other 100 watt and 220 V are connected parallel to 220 V main supply. Calculate the current drawn from the supply line?.
Two electric bulb one rated 60 watt and 220 V and other 100 watt and 220 V are connected parallel to 220 V main supply. Calculate the current drawn from the supply line? 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 Two electric bulb one rated 60 watt and 220 V and other 100 watt and 220 V are connected parallel to 220 V main supply. Calculate the current drawn from the supply line? covers all topics & solutions for Class 10 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Two electric bulb one rated 60 watt and 220 V and other 100 watt and 220 V are connected parallel to 220 V main supply. Calculate the current drawn from the supply line?.
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