Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app

JEE Main 20245 AprilMorning Shift

Exam: JEE Main
Year: 2024
Date: 5 April
Shift: Morning Shift
Subject: Physics
Chapter: Magnetic Effects of Current

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

In a co-axial straight cable, the central conductor and the outer...

In a co-axial straight cable, the central conductor and the outer conductor carry equal currents in opposite directions. The magnetic field is zero :

In a co-axial straight cable, the central conductor and the outer conductor carry equal currents in opposite

Options

Aoutside the cable
Binside the outer conductor
Cinside the inner conductor
Din between the two conductors

Correct answer

A. outside the cable

Step-by-step solution

In a co-axial straight cable, the central conductor and the outer conductor carry equal currents in opposite

\oint \overrightarrow{\mathrm{B}} \cdot \mathrm{d} \vec{\ell}=\mu_0 \mathrm{i}_{\mathrm{enc}}=0

\therefore \mathrm{B}=0

outside the cable

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 2026 In a vacuum chamber, a particle of charge 1\ and mass 1 mg is projected with a velocity (… JEE Advanced 2026 A current carrying circular loop of radius 2 cm with unit normal n = k + i 2 is placed in… JEE Main 2026 A 5 mg particle carrying a charge of 5π× 10^ -6 C is moving with velocity of (3 i +2 k )×… JEE Main 2026 A current of 30 A each flows in opposite directions in two conducting wires, placed… JEE Main 2026 A small cube of side 1 mm is placed at the centre of a circular loop of radius 10 cm… JEE Main 2026 The charged particle moving in a uniform magnetic field of (3 i + 2 j ) T has an… JEE Main 2026 A 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