MHT CET · Physics · Magnetic Effects of Current
The magnetic field inside a current carrying toroidal solenoid is \(0.2 \mathrm{mT}\). What is the magnetic field inside the toroid if the current
- A \(0.02 \mathrm{mT}\)
- B \(0.6 \mathrm{mT}\)
- C \(0.8 \mathrm{mT}\)
- D \(0.9 \mathrm{mT}\)
Answer & Solution
Correct Answer
(B) \(0.6 \mathrm{mT}\)
Step-by-step Solution
Detailed explanation
Magnetic field inside the toroid is given by
\(
\begin{aligned}
& \mathrm{B}=\mu_0 \mathrm{nI} \\
& \therefore \frac{\mathrm{B}_2}{\mathrm{~B}_1}=\frac{\mathrm{I}_2}{\mathrm{I}_1}=3
\end{aligned}
\)
(If cross-sectional radius of the solenoid is changed three will be no effect on the magnetic field, assuming the number of turns remains same.)
\(
\therefore \mathrm{B}_2=3 \mathrm{~B}_1=3 \times 0.2=0.6 \mathrm{~T}
\)
\(
\begin{aligned}
& \mathrm{B}=\mu_0 \mathrm{nI} \\
& \therefore \frac{\mathrm{B}_2}{\mathrm{~B}_1}=\frac{\mathrm{I}_2}{\mathrm{I}_1}=3
\end{aligned}
\)
(If cross-sectional radius of the solenoid is changed three will be no effect on the magnetic field, assuming the number of turns remains same.)
\(
\therefore \mathrm{B}_2=3 \mathrm{~B}_1=3 \times 0.2=0.6 \mathrm{~T}
\)
See the Complete Solution
Get step-by-step explanations for this and 2.5 Lakh+ more JEE, NEET & CET questions.
- Unlock all solutions
- Practice the full chapter
- Track accuracy across PYQs
4.8 rated on Google Play · 14,000+ reviews
More questions from Physics
- A metal sphere of radius 'R', density ' \(\varrho_{1}\) ' moves with terminal velocity ' \(\mathrm{v}_{1}\) ' through
a liquid of density ' \(\sigma^{\prime}\). Another sphere of same radius but of density ' \(\varrho_{2}\) ' moves
through same liquid. Its terminal velocity will beMHT CET 2020 Easy - If a gas is compressed isothermally then the r.m.s. velocity of the moleculesMHT CET 2023 Easy
- A particle is revolving in anticlockwise sense along the circumference of a circle of radius 'r' with linear velocity 'v', then the angle between ' \(\mathrm{v}^{\prime}\) and angular velocity '\(\omega^{\prime}\) will beMHT CET 2020 Easy
- An electromagnetic wave, whose wave normal makes an angle of \(45^{\circ}\) with the vertical, travelling in air strikes a horizontal liquid surface. While travelling through the liquid it gets deviated through \(15^{\circ}\). What is the speed of the electromagnetic wave in the liquid, if the speed of electromagnetic wave in air is \(3 \times 10^8 \mathrm{~m} / \mathrm{s}\) ? \(\left(\sin 30^{\circ}=0 \cdot 5, \sin 45^{\circ}=\frac{1}{\sqrt{2}}\right)\)MHT CET 2023 Medium
- Two small identical metal balls are equally charged and placed at a fixed distance away from each other. They experience the electrostatic force ' \(F\) ' A similar uncharged ball after touching one of them is placed at the middle point between the two balls. The force experienced by this ball isMHT CET 2022 Medium
- A sphere of mass 25 gram is placed on a vertical spring. Spring is compressed by \(0.2 \mathrm{~m}\) using a force \(5 \mathrm{~N}\). When the spring is relaxed, mass is reaching a height of \(\left(\mathrm{g}=10 \mathrm{~m} / \mathrm{s}^2\right)\)MHT CET 2021 Easy
More PYQs from MHT CET
- Earth revolves round the sun in a circular orbit of radius 'R'. The angular momentum of the revolving earth is directly proportional toMHT CET 2020 Easy
- The maximum value of the objective function \(\mathrm{z}=2 \mathrm{x}+3 \mathrm{y}\) subject to the constraints \(\mathrm{x}+\mathrm{y} \leq 5,2 \mathrm{x}+\mathrm{y} \geq 4\) and \(\mathrm{x} \geq 0, \mathrm{y} \geq 0\) isMHT CET 2021 Medium
- Identify rare earth element from following.MHT CET 2024 Medium
- In the part of an a.c. circuit as shown, the resistance \(\mathrm{R}=0.2\) \(\Omega\). At a certain instant \(\left(\mathrm{V}_{\mathrm{A}}-\mathrm{V}_{\mathrm{B}}\right)=0.5 \mathrm{~V}, \mathrm{I}=0.5 \mathrm{~A}\) and \(\frac{\Delta \mathrm{I}}{\Delta \mathrm{t}}=8 \mathrm{~A} / \mathrm{s}\). The inductance of the coil is
MHT CET 2021 Hard - The money invested in a company is compounded continuously. If ₹ \(400\) invested today becomes ₹800 in 6 years, then at the end of 30 years, it will become (in ₹)MHT CET 2025 Medium
- Identify neutral ligand from following?MHT CET 2025 Easy