CBSE 12th Physics Outside Delhi Set 1 - 2023

MCQ (Single Correct Answer)

-0

A cell of emf $$E$$ is connected across an external resistance $$R$$. When current '$$I$$' is drawn from the cell, the potential difference across the electrodes of the cell drops to $$\mathrm{V}$$. The internal resistance '$$r$$' of the cell is

$$\left(\frac{E-V}{E}\right) R$$

$$\left(\frac{E-V}{R}\right)$$

$$\frac{(E-V) R}{I}$$

$$\left(\frac{(E-V)}{V}\right) R$$

Class 12 Subjects

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

Solutions Electrochemistry Chemical Kinetics

Inorganic Chemistry

d and f Block Elements Coordination Compounds

Organic Chemistry

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

Mathematics

Relations and Functions

Relations and Functions Inverse Trigonometric Function

Calculus

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

Algebra

Matrices Determinants Probability Vector Algebra Three Dimensional Geometry