Number of Electric lamp designed to be used on a 220v Electric Supply are rated 10 Watt each. Calculate the number of length that can be connected in parallel to each other across the two wires of 220 V line is the maximum allowable current is 5A
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Resistance R1 of the bulb is given by the expression,
Supply voltage, V = 220 V
Maximum allowable current, I = 5 A
Rating of an electric bulb P=10watts
Because R=V2/P
According to Ohm�s law,
V = I R
Let R is the total resistance of the circuit for x number of electric bulbs
R=V/I
�� =220/5=44 ?
Resistance of each electric bulb, R1=4840?
? Number of electric bulbs connected in parallel are 110.
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Answered by
5
____________________________________
Resistance R1 of the bulb is given by the expression,
Supply voltage, V = 220 V
Maximum allowable current, I = 5 A
Rating of an electric bulb P=10watts
Because R=V2/P
According to Ohm’s law,
V = I R
Let R is the total resistance of the circuit for x number of electric bulbs
R=V/I
=220/5=44 Ω
Resistance of each electric bulb, R1=4840Ω
∴ Number of electric bulbs connected in parallel are 110.
____________________________________
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