CBSE 12th Physics Delhi Set 1 - 2025

MCQ (Single Correct Answer)

-0

A voltage $v=v_0 \sin \omega t$ applied to a circuit drives a current $i=i_0 \sin (\omega t+\phi)$ in the circuit. The average power consumed in the circuit over a cycle is

Zero

$i_0 v_0 \cos \phi$

$\frac{i_0 v_0}{2}$

$\frac{i_0 v_0}{2} \cos \phi$

CBSE 12th Physics Delhi Set 1 - 2023

MCQ (Single Correct Answer)

-0

Which of the following statements about a series LCR circuit connected to an ac source is correct?

If the frequency of the source is increased, the impedance of the circuit first decreases and then increases.

If the net reactance $$\left(X_L-X_C\right)$$ of circuit becomes equal to its resistance, then the current leads the voltage by $$45^{\circ}$$.

At resonance, the voltage drop across the inductor is more than that across the capacitor.

At resonance, the voltage drop across the capacitor is more than that across the inductor.

Class 12 Subjects

Browse all chapters by subject

Physics

Electromagnetism

Electrostatics Current Electricity Capacitor Magnetic Effect of Current Magnetic Properties of Matter Electromagnetic Induction Alternating Current Electromagnetic Waves

Optics

Geometrical Optics Wave Optics

Modern Physics

Atoms and Nuclei Dual Nature of Radiation Semiconductor

Chemistry

Physical Chemistry

Chemical Kinetics Solutions Electrochemistry

Inorganic Chemistry

d and f Block Elements Coordination Compounds

Organic Chemistry

Aldehydes, Ketones and Carboxylic Acids Biomolecules Alcohols, Phenols and Ethers Haloalkanes and Haloarenes Amines

Mathematics

Calculus

Definite Integration Differential Equations Continuity and Differentiability Indefinite Integration Application of Integration Application of Derivatives

Relations and Functions

Inverse Trigonometric Function Relations and Functions

Algebra

Three Dimensional Geometry Probability Matrices Determinants Vector Algebra