JEE Mains · Physics · STD 12 - 3. current electricity
The current flowing through a conductor connected across a source is \(2\,A\) and \(1.2\,A\) at \(0^{\circ}\,C\) and \(100^{\circ}\,C\) respectively. The current flowing through the conductor at \(50^{\circ}\,C\) will be \(......\times 10^2\,mA\).
- A \(14\)
- B \(13\)
- C \(12\)
- D \(15\)
Answer & Solution
Correct Answer
(D) \(15\)
Step-by-step Solution
Detailed explanation
\(i_0 R_0=i_{100} R_{100} \quad\) [For same source] \(\Rightarrow 2 R_0=1.2 R_0[1+100 \alpha]\) \(\Rightarrow 1+100 \alpha=\frac{5}{3} \Rightarrow 100 \alpha=\frac{2}{3}\) \(\Rightarrow 50 \alpha=\frac{1}{3}\) \(\therefore i_{50} R_{50}=i_0 R_0\)…
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