12 Questions
What is an equipotential surface?
A surface where every point has the same potential
Which property of an equipotential surface ensures no work is done in moving a test charge?
Electric field is always normal to the surface
What condition must be satisfied for total internal reflection to occur?
Light travels from a denser to a rarer medium
Why do electric field lines never cross each other?
To avoid confusion in the direction of the electric field
Why are electrostatic field lines always normal to the surface of a conductor?
To prevent tangential components causing electrons to move along the surface
What are two common uses of eddy currents?
Generating heat in induction furnaces
What is the phenomenon called when a changing current in one coil induces an emf in a neighboring coil?
Electromagnetic induction
Define wattless current.
Current without consuming electrical power
Why can the voltage drop across an inductor or capacitor in a series LCR circuit be greater than the applied voltage?
Because of phase difference
What is one way to reduce iron loss in a transformer?
Using a laminated iron core
Why are electromagnetic waves considered transverse in nature?
Sinusoidal variations of electric and magnetic field vectors at right angles to propagation
How are electromagnetic waves produced?
By accelerated or oscillating charges
Test your knowledge on equipotential surfaces by defining what they are and identifying properties related to them. Learn about the characteristics of equipotential surfaces in electric fields.
Make Your Own Quizzes and Flashcards
Convert your notes into interactive study material.
Get started for free
