Question:medium

Current in a coil changes from 5 A to 10 A in 0.2 s. If the coefficient of self-induction is 10 H, then the induced emf is

Show Hint

Current in a coil changes from 5 A to 10 A in 0.2 s. If the coefficient of self-induction is 10 H, then the induced emf is

Updated On: Apr 15, 2026

112 V
250 V
125 V
230 V

Show Solution

The Correct Option is B

Solution and Explanation

Was this answer helpful?

0

Top Questions on Inductance

Two coils are placed close to each other. The mutual inductance of the pair of coils depends upon:
- MHT CET - 2024
- Physics
- Inductance
View Solution
In a coil, the current changes from \( -2 \, \text{A} \) to \( +2 \, \text{A} \) in \( 0.2 \, \text{s} \) and induces an emf of \( 0.1 \, \text{V} \). The self-inductance of the coil is:
- MHT CET - 2024
- Physics
- Inductance
View Solution
If \( L \) is the inductance and \( R \) is the resistance, then the unit of \( \frac{L}{R} \) is:
- MHT CET - 2024
- Physics
- Inductance
View Solution
An e.m.f of 5 volts is produced by a self-inductance when the current changes at a steady rate from 3A to 2A in 1 millisecond. The value of self-inductance is:
- MHT CET - 2024
- Physics
- Inductance
View Solution
Want to practice more? Try solving extra ecology questions todayView All Questions

Questions Asked in MET exam

At great distances from an electric dipole, the electric field strength due to the dipole varies with the distance as

MET - 2018
Electrostatics

A charged particle travels along a straight line with a speed $\nu$ in a region where both electric field $\mathbf{E}$ and magnetic fields $\mathbf{B}$ are present. It follows that}

MET - 2018
Magnetic Effects of Current and Magnetism

A solenoid of length $50~\mathrm{cm}$ and a radius of cross-section $1\mathrm{cm}$ has 1000 turns of wire wound over it. If the current carried is 5A, the magnetic field on its axis, near the centre of the solenoid is approximately (permeability of free space $\mu_{0} = 4\pi \times 10^{-7}\mathrm{T}\cdot \mathrm{m / A}$)

MET - 2018
Magnetic Effects of Current and Magnetism

A transformer of $100%$ efficiency has 200 turns in the primary and 40000 turns in secondary. It is connected to a $220~\mathrm{V}$ main supply and secondary feeds to a $100\mathrm{k}\Omega$ resistance. The potential difference per turn is

MET - 2018
Electromagnetic induction