Download App

STD 12 - 4. Moving charges and magnetism — NEET STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceNEETSTD 12 - 4. Moving charges and magnetism4 Marks
Question
Three rings, each having equal radius $R,$ are placed mutually perpendicular to each other and each having its centre at the origin of co-ordinate system. If current $I$ is flowing thriugh each ring then the magnitude of the magnetic field at the common centre is
✓

Answer

$\vec{B}=B_{x} \hat{i}+B_{y} \hat{j}+B_{z} \hat{k}$

$B=\sqrt{B_{x}^{2}+B_{y}^{2}+B_{z}^{2}}$

since $B_{x}=B_{y}=B_{z} s o B=\sqrt{3} B_{0}$

$B=\sqrt{3} . \frac{\mu_{0}}{4 \pi} \frac{2 \pi I}{R}=\sqrt{3} \frac{\mu_{0} I}{2 R}$

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

NEET STD 11 Science question papers→Gujarat Board STD 11 Science question papers→Gujarat Board question paper generator→

Similar questions

A conducting sphere of radius $R = 20$ $cm$ is given a charge $Q = 16\,\mu C$. What is $\overrightarrow E $ at centre
→
If the highest modulating frequency of the wave is $5\, kHz$, the number of stations that can be accomdated in a $150\, kHz$ bandwidth are
→
What force should be applied on the wedge so that block over it does not move? (All surfaces are smooth)
→
Which series of hydrogen atom lie in infrared region?
→
The current from the battery in circuit diagram shown is .............. $A$
→
A ball is projected vertically upward with an initial velocity of $50 \; ms ^{-1}$ at $t =0 \; s$. At $t =2 \,s$. another ball is projected vertically upward with same velocity. At $t= \; \dots \; s$, second ball will meet the first ball $\left( g =10 \; ms ^{-2}\right)$.
→
In a screw gauge, there are $100$ divisions on the circular scale and the main scale moves by $0.5\,mm$ on a complete rotation of the circular scale. The zero of circular scale lies $6$ divisions below the line of graduation when two studs are brought in contact with each other. When a wire is placed between the studs, $4$ linear scale divisions are clearly visible while $46^{\text {th }}$ division the circular scale coincide with the reference line. The diameter of the wire is $...........\times 10^{-2}\,mm$
→
A capillary tube of radius $r$ is immersed in water and water rises in it to a helght $h$. The mass of the water in the capillary is $5\,g.$ Another capillary tube of radlus $2\, r$ is immersed in water. The mass of water that will rise in this tube is $........\;g$
→
A torch bulb rated as $4.5\, W, 1.5\, V$ is connected as shown in the figure. The $e.m.f.$ of the cell needed to make the bulb glow at full intensity is ............. $V$
→
The minimum wavelength of photon is $5000 Å$, its energy will be
→