Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
JEE Main 20245 AprilEvening Shift
Exam
JEE Main
Year
2024
Date
5 April
Shift
Evening Shift
Subject
Physics
Chapter
Magnetic Effects of Current

JEE Main 2024 · 5 April · Evening Shift · Physics · Magnetic Effects of Current

The electrostatic force ( F_1 ) and magnetic force ( F _2) acting...

The electrostatic force (F1→)\left(\overrightarrow{F_1}\right) and magnetic force (F⃗2)\left(\vec{F}_2\right) acting on a charge qq moving with velocity vv can be written :

Options

  1. AF⃗1=qE⃗,F⃗2=q(V⃗×B⃗)\vec{F}_1=q \vec{E}, \vec{F}_2=q(\vec{V} \times \vec{B})
  2. BF⃗1=qB⃗,F⃗2=q(B⃗×V⃗)\vec{F}_1=q \vec{B}, \vec{F}_2=q(\vec{B} \times \vec{V})
  3. CF⃗1=qE⃗,F⃗2=q(B⃗×V⃗)\vec{F}_1=q \vec{E}, \vec{F}_2=q(\vec{B} \times \vec{V})
  4. DF⃗1=qV⃗⋅E⃗,F⃗2=q(B⃗⋅V⃗)\vec{F}_1=q \vec{V} \cdot \vec{E}, \vec{F}_2=q(\vec{B} \cdot \vec{V})

Correct answer

A. F⃗1=qE⃗,F⃗2=q(V⃗×B⃗)\vec{F}_1=q \vec{E}, \vec{F}_2=q(\vec{V} \times \vec{B})

Step-by-step solution

\begin{aligned} & \overrightarrow{\mathrm{F}_1=\mathrm{q} \overrightarrow{\mathrm{E}} \\ & \overrightarrow{\mathrm{F}_2=\mathrm{q}(\overrightarrow{\mathrm{V}} \times \overrightarrow{\mathrm{B}}) \end{aligned} (Theory)
Practice Magnetic Effects of Current on Quantrex Academy →

More from Magnetic Effects of Current

A hollow, right circular cone of base radius R and height h , with its tip at the origin… JEE Advanced 2026In a vacuum chamber, a particle of charge 1\ and mass 1 mg is projected with a velocity (… JEE Advanced 2026A current carrying circular loop of radius 2 cm with unit normal n = k + i 2 is placed in… JEE Main 2026A 5 mg particle carrying a charge of 5π× 10^ -6 C is moving with velocity of (3 i +2 k )×… JEE Main 2026A current of 30 A each flows in opposite directions in two conducting wires, placed… JEE Main 2026A small cube of side 1 mm is placed at the centre of a circular loop of radius 10 cm… JEE Main 2026The charged particle moving in a uniform magnetic field of (3 i + 2 j ) T has an… JEE Main 2026A circular coil of radius 2 cm and 125 turns carries a current of 1 A. The coil is placed… JEE Main 2026 Full Magnetic Effects of Current list All JEE Main PYQs