JEE Mains · Physics · STD 12 - 3. current electricity
In a large building, there are \(15\) bulbs of \(40\ W\), \(5\) bulbs of \(100\ W, 5\) fans of \(80\ W\) and \(1\) heater of \(1\ kW\). The voltage of electric mains is \(220\ V\). The minimum capacity of the main fuse of the building will be ................ \(A\)
- A \(10\)
- B \(12\)
- C \(14 \)
- D \(8\)
Answer & Solution
Correct Answer
(B) \(12\)
Step-by-step Solution
Detailed explanation
Total power consumed by electrical appliances in the building, \(P_{\text {total }}=2500\, \mathrm{W}\) Watt \(=\) Volt \(\times\) ampere \(\Rightarrow \quad 2500=\mathrm{V} \times \mathrm{I}\) \(\Rightarrow \quad 2500=2201\)…
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