COMEDK · Physics · 22. Electromagnetic Induction
A vertical circular coil of radius \(0.1 \mathrm{~m}\) and having 10 turns carries a steady current. When the plane of the coil is normal to the magnetic meridian, a neutral point is observed at the centre of the coil. If \(B_{H}=0.314 \times 10^{-4} \mathrm{~T}\), then the current in the coil is
- A \(2 \mathrm{~A}\)
- B \(1 \mathrm{~A}\)
- C \(0.5 \mathrm{~A}\)
- D \(0.25 \mathrm{~A}\)
Answer & Solution
Correct Answer
(C) \(0.5 \mathrm{~A}\)
Step-by-step Solution
Detailed explanation
Given, radius of the coil \(=0.1 \mathrm{~m}\) No. of turns in the coil \(=10\) Horizontal component of magnetic field, \[ B_{H}=0.314 \times 10^{-4} \mathrm{~T} \] The magnetic field at the centre of current carrying coil is given by the formula, \(B=\frac{\mu_{0} n I}{2 R}\)…
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
- Optical pumping means transferring electronsCOMEDK 2012 Medium
- By connecting two given capacitors, a technician was able to make two new capacitors having the effective capacitance \(12.5 \mu \mathrm{F}\) and \(2 \mu \mathrm{F}\). What would be the capacitance of the given capacitors?COMEDK 2025 Medium
- The mutual inductance between two coils depends uponCOMEDK 2014 Easy
- Which of the following quantity represents the dimensions of momentum?COMEDK 2021 Easy
- Dielectric constant of a metal isCOMEDK 2016 Easy
- Momentum of a body is increased to three times its original value. By what percentage will its kinetic energy change?COMEDK 2025 Medium
More PYQs from COMEDK
- The standard reduction potentials of \(\mathrm{Zn}\) and \(\mathrm{Ag}\) in water at \(298 \mathrm{~K}\) are,
\(\begin{aligned}
\mathrm{Zn}^{2+}+2 e^{-} \rightleftharpoons \mathrm{Zn}, & E^{\circ}=-0.76 \mathrm{~V} \\
\text { and } \quad \mathrm{Ag}^{+}+e^{-} \rightleftharpoons \mathrm{Ag} ; & E^{\circ}=+0.80 \mathrm{~V}.
\end{aligned}\)
Which of the following reactions take place?COMEDK 2013 Easy - The orthocent:e of the triangle with vertices \(A(0,0), B(0,3 / 2), C(-5,0)\) isCOMEDK 2020 Medium
- The coefficient of volume expansion of glycerine is \(49 \times 10^{-5} \mathrm{~K}^{-1}\). The percentage change in its density for a \(50^{\circ} \mathrm{C}\) rise in temperature isCOMEDK 2024 Easy
- Find \(\sin \theta\), if \(\theta\) is the angle between the vectors \(3 \hat{\mathbf{i}}+\hat{\mathbf{j}}+2 \hat{\mathbf{k}}\) and \(\hat{\mathbf{i}}+\hat{\hat{\mathbf{j}}}+2 \hat{\mathbf{k}}\).COMEDK 2014 Easy
- The figure shows a network of five capacitors connected to a 20 V battery. Calculate the charge acquired by each 10 \(\mu\)F capacitor.
COMEDK 2024 Medium - A particle at rest decays in to two particles of mass \(m_1\) and \(m_2\) and move with velocities \(v_1\) and \(v_2\). The ratio of their de Broglie wave length \(\dfrac{\lambda_1}{\lambda_2}\) is:COMEDK 2023 Medium