MCQ
When a current I flows through a resistance R for time t, the electrical energy spent is given by :
- A$IRt$
- ✓$1^2 Rt$
- C$I^2 t t$
- D$I^{\wedge} 2 R / t$
✓
Answer
Correct option: B.
$1^2 Rt$
$I^2 R t$
Note: Electrical energy $( W )= I ^2 Rt = VIt =\frac{ V ^2 t }{ R }$
Note: Electrical energy $( W )= I ^2 Rt = VIt =\frac{ V ^2 t }{ R }$
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