Question:
A flexible wire loop carrying current is placed in external magnetic field. Its shape becomes:
A flexible wire loop carrying current is placed in external magnetic field. Its shape becomes:
Show Hint
Magnetic forces in current-carrying wires tend to form symmetric loops → minimum energy configuration is circular.
Updated On: May 13, 2025
- helical
- circular
- straight line
- parabolic
Hide Solution
Verified By Collegedunia
The Correct Option is B
Solution and Explanation
Current loop in magnetic field experiences inward magnetic force. A flexible wire attains minimum potential energy in circular shape.
Was this answer helpful?
0
0
Top Questions on Magnetic Effects of Current and Magnetism
- Two small balls with masses m and 2m are attached to both ends of a rigid rod of length d and negligible mass. If angular momentum of this system is L about an axis (A) passing through its centre of mass and perpendicular to the rod then angular velocity of the system about A is:
- JEE Main - 2026
- Physics
- Magnetic Effects of Current and Magnetism
Three long straight wires carrying current are arranged mutually parallel as shown in the figure. The force experienced by \(15\) cm length of wire \(Q\) is ________. (\( \mu_0 = 4\pi \times 10^{-7}\,\text{T m A}^{-1} \))
- JEE Main - 2026
- Physics
- Magnetic Effects of Current and Magnetism
- The current passing through a conducting loop in the form of equilateral triangle of side $4\sqrt{3}$ cm is 2 A. The magnetic field at its centroid is $\alpha \times 10^{-5}$ T. The value of $\alpha$ is ___. (Given : $\mu_0 = 4\pi \times 10^{-7}$ SI units)
- JEE Main - 2026
- Physics
- Magnetic Effects of Current and Magnetism
- The energy of an electron in an orbit of the Bohr's atom is $-0.04 E_g$ where $E_g$ is the ground state energy. If $L$ is the angular momentum of the electron in this orbit and $h$ is the Planck's constant, then $\frac{2 \pi L{h}$ is _________} :}
- JEE Main - 2026
- Physics
- Magnetic Effects of Current and Magnetism
- There are three long parallel wires in a plane as shown. Find the force on \(15\) cm of length of the middle wire.
- JEE Main - 2026
- Physics
- Magnetic Effects of Current and Magnetism
View More Questions
Questions Asked in AP EAPCET exam
- In a series LCR circuit, the voltages across the capacitor, resistor, and inductor are in the ratio 2:3:6. If the voltage of the source in the circuit is 240 V, then the voltage across the inductor is
- AP EAPCET - 2025
- Electromagnetic induction
- 0.25 moles of $ \text{CH}_2\text{FCOOH} $ was dissolved in $ 0.5 \, \text{kg} $ of water. The depression in freezing point of the resultant solution was observed as $ 1^\circ \text{C} $. What is the van't Hoff factor? ($ K_f = 1.86 \, \text{K kg mol}^{-1} $)
- AP EAPCET - 2025
- Colligative Properties
- At $T(K)$, the vapor pressure of water is $x$ kPa. What is the vapor pressure (in kPa) of 1 molal solution containing non-volatile solute?
- AP EAPCET - 2025
- Colligative Properties
- At 300 K, vapour pressure of pure liquid A is 70 mm Hg. It forms an ideal solution with liquid B. Mole fraction of B = 0.2 and total vapour pressure of solution = 84 mm Hg. What is vapour pressure (in mm) of pure B?
- AP EAPCET - 2025
- Colligative Properties
- A 1% (w/v) aqueous solution of a certain solute is isotonic with a 3% (w/v) solution of glucose (molar mass 180 g mol$^{-1}$). The molar mass of solute (in g mol$^{-1}$) is
- AP EAPCET - 2025
- Colligative Properties
View More Questions