MHT CET 2026 20th April Evening Shift | Alternating Current Question 1 | Physics

In an LCR series circuit an alternating voltage source of frequency $F$ is connected. The current leads the voltage by $45^\circ$. The value of $L$ is

$\dfrac{1 + 2\pi FCR}{2\pi FC}$

$\dfrac{1 + 2\pi FCR}{4\pi^2 F^2C}$

$\dfrac{1 - 2\pi FCR}{4\pi^2 F^2C}$

$\dfrac{1 + 2\pi FR}{4\pi^2 F^2C}$

MHT CET 2026 20th April Evening Shift

MCQ (Single Correct Answer)

-0

Given below are the two circuits, choose the correct option.

At resonance, current in (B) is less than that in (A)

The r.m.s. current in (B) can be larger than that in (A)

The r.m.s. current in (A) is always equal to that in (B)

The r.m.s. current in (B) can never be larger than that in (A)

MHT CET 2026 20th April Evening Shift

MCQ (Single Correct Answer)

-0

In a L-R circuit of 4 mH inductance and $3\ \Omega$ resistance, e.m.f. $E = \cos(1000t)$ V is applied. The amplitude of current is

$1.6$ A

$1$ A

$0.2$ A

$0.4$ A

MHT CET 2026 20th April Evening Shift

MCQ (Single Correct Answer)

-0

A current of 4 A is flowing at 230 V in the primary coil of a transformer. If the voltage produced in the secondary coil is 2300 V and 40 % of power is lost, then the current in the secondary will be

$0.24$ A

$0.2$ A

$0.12$ A

$0.4$ A

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Chemistry

Physical Chemistry

Some Basic Concepts of Chemistry Atomic Structure States of Matter Thermodynamics Chemical Equilibrium Ionic Equilibrium Liquid Solution Redox Reactions Surface Chemistry Solid State Electrochemistry Chemical Kinetics Nuclear Chemistry

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Periodic Table and Periodicity Chemical Bonding and Molecular Structure Metallurgy Hydrogen and It's Compounds s-Block Elements p-Block Elements d and f Block Elements Coordination Compounds Environmental Chemistry

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IUPAC Nomenclatures General Organic Chemistry Isomerism Hydrocarbons Haloalkanes and Haloarenes Alcohol, Phenols and Ethers Aldehyde and Ketone Carboxylic Acids and Its Derivatives Compounds Containing Nitrogen Polymers Biomolecules Chemistry in Everyday Life Practical Organic Chemistry