CBSE 2023 · Region 5 · Set 3 · Q23 · 2 marks
Two identical circular loops P and Q , each of radius R carrying current I are kept in perpendicular planes such that they have a common centre O as shown in the figure.
Find the magnitude and direction of the net magnetic field at point O .A long straight conductor kept along $\displaystyle \mathrm{X}^{\prime} \mathrm{X}$ axis, carries a steady current I along $\displaystyle +x$ direction. At an instant t , a particle of mass m and charge q at point ( $\displaystyle x, \mathrm{y}$ ) moves with a velocity $\displaystyle \vec{v}$ along +y direction. Find the magnitude and direction of the force on the particle due to the conductor.
Two identical circular loops P and Q , each of radius R carrying current I are kept in perpendicular planes such that they have a common centre O as shown in the figure.
Find the magnitude and direction of the net magnetic field at point O .
A long straight conductor kept along $\displaystyle \mathrm{X}^{\prime} \mathrm{X}$ axis, carries a steady current I along $\displaystyle +x$ direction. At an instant t , a particle of mass m and charge q at point ( $\displaystyle x, \mathrm{y}$ ) moves with a velocity $\displaystyle \vec{v}$ along +y direction. Find the magnitude and direction of the force on the particle due to the conductor.
Marking-scheme solution
| \begin{tabular}[t]{|l|l|} (a) | ||
| \[ \begin{aligned} \beta_{1} | =\frac{\mu_{0} I}{2 R} | |
| \beta_{2} | =\frac{\mu_{0} I}{2 R} | |
| 3 | =\sqrt{B_{1}^{2}+B_{2}^{2}} \end{aligned} \] \[ \beta=\sqrt{2\left(\frac{\mu_{0} I}{2 R}\right)^{2}} \] \[ \beta=\sqrt{2} \frac{\mu_{0} I}{2 R} \] |
OR
\end{tabular}Moving Charges and MagnetismMagnetic Field on the Axis of a Circular Current LoopApplyvery_short_answermedium
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CBSE Class 12 Physics past-paper question from the 2023board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.