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JEE Main
JEECUP
WBJEE

2024
2025

Physics

Zener Diodes
AC Circuits
AC Voltage
Acceleration
Adiabatic Processes
Alpha-Particle Scattering And Rutherford’S Nuclear Model Of Atom
Alternating current
Amperes circuital law
Analog and Digital Electronics
Atomic Models
Atomic Physics
Atomic Spectra
Atomic Structure
Atomic spectroscopy
Atoms
Bohr's model of hydrogen atom
Bohr’s Model for Hydrogen Atom
Calorimetry
Capacitance
Capacitors
Capacitors and Capacitance
Capacitors and Displacement Current
Capacitors in DC Circuits
Capacitors in Parallel and in Series
Center of Mass
Centre of mass
Circuits and Ohm’s Law
Circular motion
Combination of Resistors - Series and Parallel
Combination of capacitors
Conductance
Conductance
Conservation of energy
Current electricity
Decay Rate
Diffraction
Digital Circuits
Dimensional Analysis
Dimensional analysis
Displacement current
Dual nature of matter
Dual nature of radiation and matter
Elastic and inelastic collisions
Elasticity
Electric Charge
Electric Circuit
Electric Current
Electric Dipole
Electric Field
Electric Flux
Electric Flux Density
Electric Potential And Potential Difference
Electric and Magnetic Fields
Electric charges and fields
Electrical Circuits
Electrical Circuits and Shunt Resistance
Electrical Instruments
Electromagnetic Field (EMF)
Electromagnetic Induction and Inductance
Electromagnetic Spectrum
Electromagnetic induction
Electromagnetic waves
Electromagnetism
Electronic devices
Electrostatic potential
Electrostatics
Electrostatics and Potential Energy
Electrostatics and Work Done by Electric Field
Energy in simple harmonic motion
Equilibrium
Error Analysis
Error Propagation
Error analysis
Errors in Measurement
Escape Speed
Faradays laws of induction
Fluid Mechanics
Fluids
Forces
Friction
Gas laws
Gauss Law
Gauss's Law
Gauss's, Green's and Stokes’ theorems
General Physics
Gravitation
Gravitational Potential Energy
Heat Transfer
Hooke's Law
Hooke's Law and Springs
Ideal gas equation
Interference and Diffraction
KCL/ KVL in AC Circuits
Keplers Laws
Kinematics
Kinetic Energy
Kinetic Energy and Projectile Motion
LCR Circuit
Laws of thermodynamics
Light - Reflection and Refraction
Liquid state
Logic gates
Magnetic Effects Of Electric Current
Magnetic Effects of Current and Magnetism
Magnetic Field
Magnetic Field Due To A Current Element, Biot-Savart Law
Magnetic Force
Magnetic moment
Magnetic properties of materials
Magnetism and matter
Meter Bridge
Miscellaneous
Modern Physics
Moment Of Inertia
Momentum and Kinetic Energy in Collisions
Motion in a Straight Line
Motion in a plane
Motion in a plane with constant acceleration
Motion in a straight line
Moving charges and magnetism
Newton's Laws of Motion
Newtons Laws of Motion
Newtons law of gravitation
Newton’s First Law Of Motion
Newton’s Law Of Cooling
Nuclear physics
Nuclear physics
Nuclei
Optics
Optics and Refraction
P-N Junction
Pendulums
Photoelectric Effect
Photoelectric Effect
Polarisation
Polarization
Power
Pressure
Projectile motion
Properties of Solids
Quantum Mechanics
Quantum Physics
Radioactive Decay
Random Variables
Ray optics and optical instruments
Reflection Of Light By Spherical Mirrors
Reflection and Mirrors
Refraction of Light
Refractive index
Relative Motion
Relative Velocity
Resistance
Resonance
Rotational Mechanics
Rotational Motion and Torque
Rotational motion
Satellite Motion and Angular Momentum
Scalar Triple Product
Scientific notation
Second Law of Thermodynamics and Entropy
Semiconductor electronics: materials, devices and simple circuits
Series and Parallel Connection of Resistance
Significant figures
Simple diode circuits
Sound Wave
Speed and velocity
Spherical Mirrors
Stress and Strain
Structure of atom
Surface Tension
System of Particles & Rotational Motion
The Ammeter and the Voltmeter
The Angular Momentum
The Bar Magnet
The Earth’s Magnetism
The Kinetic Theory of Gases
The Moving Coil Galvanometer
Thermal Expansion
Thermodynamics
Thermodynamics
Thermodynamics
Thermodynamics and Work Done
Thermodynamics terms
Transistors
Types of forces
Uniform Circular Motion
Units and measurement
Units, Dimensions and Measurements
Vector Calculus
Vectors
Wave Motion
Wave characteristics
Wave optics
Waves
Waves and Oscillations
Wheatstone Bridge
Work Power and Energy
Work and Energy
Youngs double slit experiment
applications of diode
centripetal acceleration
communication systems
coulombs law
de broglie hypothesis
distance and displacement
distance and displacement
electrostatic potential and capacitance
kinetic theory
laws of motion
mechanical properties of fluid
mechanical properties of solids
momentum
physical world
potential energy
radiation
simple harmonic motion
single slit diffraction
sound
specific heat capacity
spherical lenses
tension
thermal properties of matter
torque
wave interference
work
work, energy and power

List of top Physics Questions on Zener Diodes asked in JEE Main

The output voltage in the following circuit is (Consider ideal diode case):

Which of the following circuits represents a forward biased diode?

A zener diode with 5V zener voltage is used to regulate an unregulated dc voltage input of 25V. For a 400 \( \Omega \) resistor connected in series, the zener current is found to be 4 times load current. The load current \( I_L \) and load resistance \( R_L \) are:

In the following circuit, the reading of the ammeter will be: (Take Zener breakdown voltage = 4 V)

The I-V characteristics of an electronic device shown in the figure. The device is

In the given circuit if the power rating of Zener diode is 10 mW, the value of series resistance Rs to regulate the input unregulated supply is :