COMEDK · Physics · 22. Electromagnetic Induction
A coil of 100 turns carries a current of \(5 \mathrm{~mA}\) and creates a magnetic flux of \(10^{-5} \mathrm{~Wb}\). The inductance
- A \(0.2 \mathrm{mH}\)
- B \(2.0 \mathrm{mH}\)
- C \(0.02 \mathrm{mH}\)
- D None of these
Answer & Solution
Correct Answer
(D) None of these
Step-by-step Solution
Detailed explanation
Given, number of tums, \(N=100\) Current, \(I=5 \mathrm{~mA}=5 \times 10^{-3} \mathrm{~A}\) Magnetic flux, \(\phi=10^{-5} \mathrm{~Wb}\) Inductance, \(L=\) ? We know that,…
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
- In Young's double slit experiment, 1st dark fringe occurs directly opposite to a slit. Wavelength of light used isCOMEDK 2016 Easy
- The magnetic flux linked with a coil satisfies the relation \(\phi=\left(4 t^2+6 t+9\right) \mathrm{Wb}\), where \(t\) is time in second. The emf induced in the coil at \(t=2 \mathrm{~s}\) isCOMEDK 2023 Easy
- The intensity of magnetic field due to an isolated pole of strength \(m_{p}\) at a point distant \(r\) from it will beCOMEDK 2020 Medium
- The resistance of a wire at room temperature \(20^\circ\text{C}\) is found to be \(10\Omega\). If resistance of the wire increases by \(10\%\), then the temperature of the wire will be (The temperature coefficient of the material of the wire at \(0^\circ\text{C}\) is \(0.002/^\circ\text{C}\))COMEDK 2024 Medium
- The mean energy per molecule for a diatomic gas is:COMEDK 2025 Easy
- A star is moving away from the earth with speed
v. Change in wavelength \(d \lambda\) observed on earth isCOMEDK 2016 Medium
More PYQs from COMEDK
- \(A\) and \(B\) are invertible matrices of the same order such that \(\left|(A B)^{-1}\right|=8\) if \(|A|=2\) then \(|B|\) isCOMEDK 2023 Easy
- The dimensional formula for specific resistance is:COMEDK 2026 Easy
- \(\text { Evaluate: } \cos ^{-1}\left(\cos \dfrac{35 \pi}{18}\right)-\sin ^{-1}\left(\sin \dfrac{35 \pi}{18}\right)\)COMEDK 2024 Medium
- \(\int \sqrt{x} e^{\sqrt{x}} d x\) is equal toCOMEDK 2013 Hard
- 60% of a first order reaction was completed in 60 min, then 50% of the same reaction can be completed in:
[log 4 = 0.60, log 5=0.69]COMEDK 2026 Medium - One volt induced emf is produced in the secondary coil when the current through the primary coil is changed from \(3 \mathrm{~A}\) to \(1 \mathrm{~A}\) in 100 milliseconds. the mutual inductance of the two coil is:COMEDK 2023 Easy