Electromagnetic Induction
Electromagnetic induction is the process by which a changing magnetic field produces an electric current in a conductor. This phenomenon is the basis for many important technologies such as generators, transformers, and inductors.
Key Concepts:
- Faraday's Law: This law states that the induced electromotive force (emf) in any closed circuit is equal to the rate of change of the magnetic flux through the circuit.
- Lenz's Law: Lenz's law states that the direction of the induced current in a conductor is such that it opposes the change that produced it.
- Induced EMF: The induced EMF in a conductor is given by the equation: emf = -N(dΦ/dt), where N is the number of turns in the conductor and dΦ/dt is the rate of change of magnetic flux.
- Transformers: Transformers are devices that utilize electromagnetic induction to transfer electrical energy from one circuit to another through mutual induction between two coils.
- Generators: Generators convert mechanical energy into electrical energy through the rotation of a coil in a magnetic field, inducing an EMF in the coil.
Study Guide:
To understand electromagnetic induction, it's important to grasp the following concepts:
- Understand the relationship between magnetic flux and induced EMF.
- Be able to apply Faraday's and Lenz's laws to predict the direction and magnitude of induced currents.
- Study the construction and working principles of transformers and generators.
- Practice solving problems involving the calculation of induced EMF and the behavior of inductors in circuits.
Mastering the principles of electromagnetic induction is crucial for understanding the behavior of electrical circuits and the functioning of many electrical devices.
.◂Physics Worksheets and Study Guides High School. Thermodynamics
Worksheet/Answer key
Thermodynamics 
Worksheet/Answer key
Thermodynamics Worksheet/Answer key
Thermodynamics Worksheet/Answer key
Thermodynamics
Worksheet/Answer keyWorksheet/Answer keyWorksheet/Answer keyThe resources above cover the following skills:
PHYSICAL SCIENCE (NGSS)
Matter and Its Interactions
Students who demonstrate understanding can:
Develop a model to illustrate that the release or absorption of energy from a chemical reaction system depends upon the changes in total bond energy.
Energy
Students who demonstrate understanding can:
Create a computational model to calculate the change in the energy of one component in a system when the change in energy of the other component(s) and energy flows in and out of the system are known.
Plan and conduct an investigation to provide evidence that the transfer of thermal energy when two components of different temperature are combined within a closed system results in a more uniform energy distribution among the components in the system (second law of thermodynamics).