MHT-CET Electromagnetic Induction — practice questions
30 free MCQs with worked solutions. Tap any question for the answer + explanation, or practice them all in the app.
Practice MHT-CET Electromagnetic Induction in the app →Faraday's law of electromagnetic induction (in its quantitative form, with sign) is:Lenz's law gives the **direction** of the induced current. It states that the induced current flows in such a Lenz's law is a manifestation of which fundamental conservation principle?The motional EMF induced in a conductor of length $\ell$ moving with velocity $v$ perpendicular to a uniform mThe SI unit of magnetic flux is:The SI unit of self-inductance $L$ is:The induced EMF in a coil due to changing current in itself is given by:The energy stored in an inductor of inductance $L$ carrying current $I$ is:Mutual inductance $M$ between two coils satisfies:The energy density (energy per unit volume) of a magnetic field $B$ in free space is:A coil of 400 turns has each turn enclosing an area $A = (0.20\,\text{m})^2$. A uniform magnetic field perpendA conducting rod of length 1 m moves with velocity 5 m/s perpendicular to a uniform magnetic field of 0.4 T. TA conducting rod of length $\ell$ rotates about one end with angular velocity $\omega$ in a uniform magnetic fThe self-inductance of a long solenoid with $n$ turns per unit length, cross-section $A$ and length $\ell$ is:A solenoid of $N = 200$ turns, length $L = 20$ cm and cross-section $A = 5\ \text{cm}^2$ has self-inductance aA current of 4 mA in a coil of self-inductance 10 mH and 200 turns produces total flux:When two inductors $L_1$ and $L_2$ are connected in **series** (no mutual inductance), the equivalent inductanTwo inductors of 4 H and 12 H are connected in **parallel** (no mutual inductance). The equivalent inductance If the current in a coil of inductance 5 H changes from 2 A to 5 A in 0.1 s, the magnitude of induced EMF is:A magnet is moved toward a closed coil. According to Lenz's law, the induced current in the coil (as viewed frMutual inductance between two coaxial coils, when current changes in the primary, is best defined as:If the current in a primary coil changes at 30 A/s and induces 0.6 V in a secondary coil, the mutual inductancA long solenoid has $n = 2 \times 10^4$ turns/m and carries 1.4 A. Its diameter is 3 cm. A coaxial coil $C$ atThe energy stored per unit volume in a magnetic field $B = 0.1$ T in vacuum (take $\mu_0 = 4\pi \times 10^{-7}Consider a rectangular conducting loop being pulled out of a uniform magnetic field $B$ (into the page) at conA toroid has major radius $R$ and small circular cross-section of radius $r$ ($r \ll R$), with $N$ turns. Its The self-inductance of a coaxial cable with inner-cylinder radius $a$ and outer-cylinder radius $b$, length $\A coil rotates in a uniform magnetic field $B$ with angular speed $\omega$. Its plane is parallel to $B$ at $tA coil of self-inductance 2 H carries a current of 4 A. The energy stored in its magnetic field is:A coil of 1000 turns and area $10\ \text{cm}^2$ rotates about an axis perpendicular to a uniform field $B = 0.