Question:
The magnetic force acting on a straight wire of length l carrying a current I which is placed perpendicular to the uniform magnetic field B is
The magnetic force acting on a straight wire of length l carrying a current I which is placed perpendicular to the uniform magnetic field B is
Updated On: Apr 5, 2025
- IlB
- \(\frac{I}{Bl}\)
- \(\frac{B}{Il}\)
- \(I ^2Bl\)
Hide Solution
Verified By Collegedunia
The Correct Option is A
Solution and Explanation
The magnetic force \( F \) acting on a straight wire of length \( l \) carrying a current \( I \), placed perpendicular to a uniform magnetic field \( B \), is given by:
\( F = I l B \)
This equation is derived from the Lorentz force law and is valid when the angle between the wire and magnetic field is \( 90^\circ \), i.e., they are perpendicular.
Correct Answer: \( IlB \)
Was this answer helpful?
0
0
Top Questions on Magnetic Field
- A circular loop of radius 0.2 m carries a current of 4 A. What is the magnetic field at a point on the axis of the loop at a distance 0.2 m from the center?
- MHT CET - 2025
- Physics
- Magnetic Field
A conducting bar moves on two conducting rails as shown in the figure. A constant magnetic field \( B \) exists into the page. The bar starts to move from the vertex at time \( t = 0 \) with a constant velocity. If the induced EMF is \( E \propto t^n \), then the value of \( n \) is _____.
- JEE Main - 2025
- Physics
- Magnetic Field
- Consider a long thin conducting wire carrying a uniform current \( I \). A particle having mass \( M \) and charge \( q \) is released at a distance \( a \) from the wire with a speed \( v_0 \) along the direction of current in the wire. The particle gets attracted to the wire due to magnetic force. The particle turns round when it is at distance \( x \) from the wire. The value of \( x \) is:
- JEE Main - 2025
- Physics
- Magnetic Field
- A solid sphere is rolling without slipping on a horizontal plane. The ratio of the linear kinetic energy of the centre of mass of the sphere and rotational kinetic energy is:
- JEE Main - 2025
- Physics
- Magnetic Field
- The magnetic field inside a 200 turns solenoid of radius 10 cm is \( 2.9 \times 10^{-4} \) Tesla. If the solenoid carries a current of 0.29 A, then the length of the solenoid is:
- JEE Main - 2025
- Physics
- Magnetic Field
View More Questions
Questions Asked in AP POLYCET exam
- In the given figure, the radius of each outer circle is a, then the radius of the inner circle is
- If the volume of a cylinder is 500 m3 and the area of its base is 25 m2, then its height (in m) is
- AP POLYCET - 2024
- Volume of Cube, Cuboid and Cylinder
- If \(2\) is a root of the equation \(x^2-px+q=0\) and \(p^2=4q\), then the other root is
- AP POLYCET - 2024
- Quadratic Equations
- Which of the following is a polynomial?
- AP POLYCET - 2024
- Polynomials
- The upper limit of the median class of the following frequency distribution is
Class Interval 50-70 70-90 90-110 110-130 130-150 150-170 Number of Students 15 21 32 19 8 5 - AP POLYCET - 2024
- Median of Grouped Data
View More Questions