MHT CET · Physics · Electromagnetic Induction
The coefficient of mutual induction is 2 H and induced e.m.f. across secondary is 2 kV . Current in the primary is reduced from 6 A to 3 A . The time required for the change of current is
- A \(4 \times 10^{-3} s\)
- B \(6 \times 10^{-3} \mathrm{~s}\)
- C \(2 \times 10^{-3} \mathrm{~s}\)
- D \(3 \times 10^{-3} s\)
Answer & Solution
Correct Answer
(D) \(3 \times 10^{-3} s\)
Step-by-step Solution
Detailed explanation
\( \mathcal{E} = M \frac{\Delta I}{\Delta t} \) \( 2000 = 2 \frac{|3-6|}{\Delta t} \)
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
- Which one of the following \(\mathrm{p}-\mathrm{V}\) diagrams is correct for an isochoric process?
MHT CET 2021 Easy - A wave travelling along a string is described by the equation \(y=A \sin (\omega t-k x)\)
The maximum particle velocity isMHT CET 2008 Easy - In an ideal gas at temperature \(T\), the average force that a molecule applies on the walls of a closed container depends on T as \(\mathrm{T}^{\mathrm{x}}\). The value of \(x\) isMHT CET 2024 Easy
- Figure shows three forces \(\overrightarrow{\mathrm{F}}_{1}, \overrightarrow{\mathrm{F}}_{2}\) and \(\overrightarrow{\mathrm{F}}_{3}\) acting along the sides of an equilateral
triangle. If the total torque acting at point ' 0 ' (centre of the triangle) is zero then the
magnitude of \(\overrightarrow{\mathrm{F}}_{3}\) is
MHT CET 2020 Medium - The surface tension of a soap solution is ' \(\mathrm{T}\) '. Work done in blowing a soap bubble of diameter \(2 \mathrm{~d}\) isMHT CET 2022 Easy
- What should be the length of a closed pipe to produce resonance with sound wave
of wavelength \(62 \mathrm{~cm}\), in fundamental mode?
[Neglect end correction]MHT CET 2020 Easy
More PYQs from MHT CET
- The equation of line passing through the points \((3,4,-7)\) and \((6,-1,1)\) isMHT CET 2020 Easy
- Identify the molecule with linear geometry?MHT CET 2020 Medium
- A body is performing S.H.M. of amplitude 'A'. The displacement of the body from a point where kinetic energy is maximum to a point where potential energy is maximum, isMHT CET 2021 Easy
- The driver of a car travelling with a speed ' \(\mathrm{V}_1\) ' \(\mathrm{m} / \mathrm{s}\) towards a wall sounds a siren of frequency ' \(n\) ' Hz. If the velocity of sound in air is ' \(V\) ' \(\mathrm{m} / \mathrm{s}\), then the frequency of the sound reflected from the wall and as heard by the driver in Hz isMHT CET 2024 Easy
- If \(x+\log _{15}\left(5+3^x\right)=x \log _{15} 5+\log _{15} 24\), then \(x=\ldots .\).MHT CET 2025 Medium
- The sum of first four terms of a G.P. is 160 and the common ratio is 3 , then the \(4^{\text {th }}\)
term isMHT CET 2020 Easy