In case Hall effect for a strip having charge Q and area of cross-section A , Lorentz force is

English

Gujarati

Hindi

4.Moving Charges and Magnetism

easy

In case Hall effect for a strip having charge $Q$ and area of cross-section $A$, the Lorentz force is

A

Directly proportional to $Q$

B

Inversely proportional to $Q$

C

Inversely proportional to $A$

D

Directly proportional to $A$

Solution

$\overrightarrow{ F }= Q [\overrightarrow{ E }+(\overrightarrow{ v } \times \overrightarrow{ B })]$
So, $F \propto Q$

Standard 12

Physics

Share

Similar Questions

A charged particle enters a uniform magnetic field perpendicular to it. The magnetic field

easy

A strong magnetic field is applied on a stationary electron, then

easy

The magnetic moments associated with two closely wound circular coils $A$ and $B$ of radius $r_A=10 cm$ and $r_B=20 cm$ respectively are equal if: (Where $N _A, I _{ A }$ and $N _B, I _{ B }$ are number of turn and current of $A$ and $B$ respectively)

medium

(JEE MAIN-2023)

A proton moving with a constant velocity, passes through a region of space without change in its velocity. If $E$ $\& B$ represent the electric and magnetic fields respectively, this region may have

medium

If a particle of charge ${10^{ – 12}}\,coulomb$ moving along the $\hat x – $ direction with a velocity ${10^5}\,m/s$ experiences a force of ${10^{ – 10}}\,newton$ in $\hat y – $ direction due to magnetic field, then the minimum magnetic field is

medium