TS EAMCET · Physics · Current Electricity
The potential difference between the ends of a straight conductor of length 20 cm is 16 V . If the drift speed of the electrons is \(2.4 \times 10^{-4} \mathrm{~ms}^{-1}\), the electron mobility in \(\mathrm{m}^2 \mathrm{~V}^{-1} \mathrm{~s}^{-1}\) is
- A \(3.6 \times 10^{-6}\)
- B \(2.4 \times 10^{-6}\)
- C \(2 \times 10^{-6}\)
- D \(3 \times 10^{-6}\)
Answer & Solution
Correct Answer
(D) \(3 \times 10^{-6}\)
Step-by-step Solution
Detailed explanation
Given, Length of conductor, \(\ell=20 \mathrm{~cm}\) Potential difference, \(\mathrm{V}=16 \mathrm{~V}\) Drift speed, \(\mathrm{V}_{\mathrm{d}}=2.4 \times 10^{-4} \mathrm{~ms}^{-1}\) Mobility of electron \(\mu=\frac{V_d}{E}\)…
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