an electric bulb is rated 110v and 25w when it is operated on 220v power consumed will be
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Given : An electric bulb is rated 110V and 25W when it is operated on 220V.
To find : What will be the power consumed.
Applying formula :
★ Power = Potential difference²/Resistance.
Calculations :
→ Resistance = 110 × 110/100
→ Resistance = 12100/100
→ Resistance = 121
→ Power = 220 × 220/121
→ Power = 48400/121
→ Power = 400W
Therefore, 400W is the power consumed.
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