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In a house having 220 V line , the follo...

In a house having `220 V` line , the following appliances are operating :
(i) a ` 60 W` bulb, (ii) a `1000 W` heater , and (iii) a` 40 W` radio.
Calculate (a) the current drawn by the heater and (b) the current passing through the fuse in the main line.

Text Solution

Verified by Experts

Here , `V = 220 V, P_(1) = 60 W , P_(2) = 1000 W , P_(3) = 40 W`.
(a) Current drawn by heater is
`(P_(2)) / (V) = ( 1000)/( 220) = ( 50) /(11) A`
Current drawn by bulb is
`(P_(1))/(V) = ( 60) /( 220) = (3) /(11) A`
Current drawn by radio is
`(P_(3))/( V) = ( 40)/( 220) = (2) /(11) A `
Current passing through the fuse for the line is
`( 50 )/( 11) + ( 3)/(11) + ( 2) /(11) = 5 A`
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