Question

Statement 1: The drift speed of electrons in metals is small (in the order of a few mm/s) and the charge of an electron is also very small ($1.6\times {10}^{-19}C$), yet we can obtain a large current in a metal.

Statement 2: At room temperature, the thermal speed of electrons is very high (about ${10}^7$ times the drift speed)

• A. Statement 1 is True, Statement 2 is True; Statement 2 is a correct explanation for Statement 1
• B. Statement 1 is True, Statement 2 is True; Statement 2 is not a correct explanation for Statement 1
• C. Statement 1 is True; Statement 2 is False
• D. Statement 1 is False; Statement 2 is True

Answer 1

The correct option is B Statement 1 is True, Statement 2 is True; Statement 2 is not a correct explanation for Statement 1

Assertion: Drift speed is small and there is a small charge on the electron yet are obtained large current.

Reason: The assertion is true but the correct reason is that due to heavy electron density are obtain large current.

Also, the reason is true but not correct for the given assertion.