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'A fuse is rated 8 A'. Can it be used with an electrical appliance of rating 5 kW, 200 V? - Physics

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Question

'A fuse is rated 8 A'. Can it be used with an electrical appliance of rating 5 kW, 200 V?
Numerical

Solution

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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Chapter 4: Current Electricity - Exercise 4.2 i [Page 187]

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Frank Physics - Part 2 [English] Class 10 ICSE
Chapter 4 Current Electricity
Exercise 4.2 i | Q 5 | Page 187
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