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Heating and Chemical Effect of Current — JEE physics STD 12 Science — Question

CBSE BoardEnglish MediumSTD 12 ScienceJEE physicsHeating and Chemical Effect of Current1 Mark
MCQ
A $10 ohm$ electric heater operates on a $110 V$ line. Calculate the rate at which it develops heat in watts
  • A
    $1310 W$
  • B
    $670 W$
  • C
    $810 W$
  • ✓
    $1210 W$
✓

Answer

Correct option: D.
$1210 W$
(d) $P=\frac{V^2}{R}=\frac{(110)^2}{10}=\frac{12100}{10}=1210 \mathrm{~W}$

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