CBSE 2025 · Region 2 · Set 2 · Q26 · 2 marks
An electric fuse is rated $\displaystyle 8$ A. Can it be used with an electrical appliance of rating $\displaystyle 5$ kW, $\displaystyle 200$ V ? Justify your answer.
Marking-scheme solution
\(\displaystyle \mathrm{P}=5 \mathrm{~kW}, \mathrm{~V}=200 \mathrm{~V}\)
Current drawn by electrical appliance \(\displaystyle =\mathrm{I}=\frac{P}{V}\)
\[=\frac{5000}{200}=25 \mathrm{~A}
\]
No, The given electric fuse cannot be used The fuse will melt and appliance stops working.
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CBSE Class 10 Science past-paper question from the 2025board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.