Heat produced (in cal) in a resistance R when a current I amperes flows through it for t…
Physics · JEE Main · NTA Exams — Current Electricity
Heat produced (in cal) in a resistance R when a current \(\text { I }\) amperes flows through it for t seconds is given by the expression
- \(\frac{I^{2} \mathrm{Rt}}{4.2}\)
- \(\frac{I \mathrm{R}^{2} \mathrm{t}}{4.2}\)
- \(\frac{4.2 I \mathrm{R}}{\mathrm{t}^{2}}\)
- \(\frac{I \mathrm{Rt}^{2}}{4.2}\)
Answer
(A) I^ 2 Rt 4.2
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