Assertion : Free electrons always keep on mov | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(A) In the absence of an electric current,the free electrons in a conductor are in a state of random motion,similar to molecules in a gas. Their avera

Vedclass · Accepted Answer

If both Assertion and Reason are correct and Reason is the correct explanation of Assertion.

Vedclass · Answer

(A) In the absence of an electric current,the free electrons in a conductor are in a state of random motion,similar to molecules in a gas. Their average velocity is zero,meaning they do not have any net velocity in a specific direction. As a result,there is no net magnetic force on the free electrons in a magnetic field. When a current is passed,the free electrons acquire a drift velocity in a definite direction,and consequently,a magnetic force acts on them (provided the magnetic field has a component perpendicular to the direction of motion).

Assertion : Free electrons always keep on moving in a conductor even then no magnetic force acts on them in a magnetic field unless a current is passed through it.
Reason : The average velocity of free electrons is zero.

Similar Questions

Observe the statements given below :
Assertion $(A)$ : $f(x)=x e^{-x}$ has the maximum at $x=1$
Reason $(R)$ : $f^{\prime}(1)=0$ and $f^{\prime \prime}(1) < 0$
Which of the following is correct?

The property of hydrogen which distinguishes it from alkali metals is

$5$ moles of Hydrogen $\left(\gamma=\frac{7}{5}\right)$ initially at $S.T.P.$ are compressed adiabatically so that its temperature becomes $400^{\circ} C$. The increase in the internal energy of the gas in kilo-joules is $(R=8.30 \ J \ mol^{-1} \ K^{-1})$.

Which type of mouthparts is present on the lateral side of the pre-oral cavity in cockroach?

Which of the following compounds is non-polar?

Vedclass Test Series

Exam Paper Generator

Online Exam Module

Assertion : Free electrons always keep on moving in a conductor even then no magnetic force acts on them in a magnetic field unless a current is passed through it.Reason : The average velocity of free electrons is zero.