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प्रश्न
'A fuse is rated 8 A'. Can it be used with an electrical appliance of rating 5 kW, 200 V?
संख्यात्मक
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उत्तर
We know that,
P=VI
I = `"P"/"V" = (5 xx 1000)/200` = 25A
Thus, safe limit of current through t he appliance is 25A and a fuse of rating BA cannot be used with an appliance of rating SkW, 200 v.
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