MCQ
A triangular loop of side l carries a current I. It is placed in a magnetic field B such that the plane of the loop is in the direction of B. The torque on the loop is
- AZero
- BIBl
- C$\frac{\sqrt{3}}{2} II^2 B^2$
- ✓$\frac{\sqrt{3}}{4}IBI^2$
✓
Answer
Correct option: D.
$\frac{\sqrt{3}}{4}IBI^2$
(d) $\frac{\sqrt{3}}{4}IBI^2$
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
A $10\, kW$ transmitter emits radio waves of wavelength $500\, m$. The number of photons emitted per second by the transmitter is of the order of
→In an $LCR$ circuit $R = 100$ ohm. When capacitance $C$ is removed, the current lags behind the voltage by $\pi /3$. When inductance $L$ is removed, the current leads the voltage by $\pi /3$. The impedance of the circuit is......$ohm$
→In a mean life of a radioactive sample
In general, metallic ropes are suspended on the carriers which take inflammable material. The reason is
Five identical small electric dipoles are placed at a distance $r$ from an infinitely long straight wire carrying a uniform charge density $\lambda$.If they experience force of magnitude $F_1$, $F_2$, $F_3$, $F_4$ and $F_5$ respectively then
→Energy per unit volume for a capacitor having area $A$ and separation $d$ kept at potential difference $V$ is given by
→As the temperature increases, the electrical resistance
In the figure below, what is the potential difference between the points $A$ and $B$ and between $B$ and $C$ respectively in steady state
→A conducting loop is placed in a uniform magnetic field with its plane perpendicular to the field. An $emf$ is induced in the loop if
→The magnetic field at a distance r from a long wire carrying current i is 0.4 Tesla. The magnetic field at a distance 2r is