an electric fuse is based on which of the following effects of current?
a)heating effect b)chemical effect
c) magnetic effect d)both heating and magnetic effect..

I think it is in electrical effect
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Sorry I mean it is in heating effect
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An electric fuse is caused due to the heating effect because if we will switch on a bulb for 10 or 15 minute and then touch it it will be hot and if for very long it would be also fused 
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heating effect
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Heating Effect
 
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A electric fuse is based on heating effect
 
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d)
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heating effect
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It is obvious that it is in heating object.
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a)
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both heating and magnetic effect ( d )

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the answer is {A} heating effect , because the fuse is there to saving us by preventing shot-circuit . it does it by - when high voltage is coming it melts itself down to break the circuit therefore protecting it .
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Heating
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The correct ans is Heating
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Heating
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