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Equipotential Surface and Properties Quiz

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Equipotential Surface and Properties Quiz

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Questions and Answers

What is an equipotential surface?

A surface with varying potential at different points

A surface with no electric field lines passing through

A surface where every point has the same potential (correct)

A surface only applicable in magnetic fields

Which property of an equipotential surface ensures no work is done in moving a test charge?

Electric field is tangential to the surface

Electric field lines are parallel to the surface

Electric field lines intersect on the surface

Electric field is always normal to the surface (correct)

What condition must be satisfied for total internal reflection to occur?

Angle of incidence is equal to the critical angle

Angle of incidence is less than the critical angle

Light travels from a denser to a rarer medium (correct)

Light travels from a rarer to a denser medium

Why do electric field lines never cross each other?

To avoid confusion in the direction of the electric field Signup and view all the answers

Why are electrostatic field lines always normal to the surface of a conductor?

To prevent tangential components causing electrons to move along the surface Signup and view all the answers

What are two common uses of eddy currents?

Generating heat in induction furnaces Signup and view all the answers

What is the phenomenon called when a changing current in one coil induces an emf in a neighboring coil?

Electromagnetic induction Signup and view all the answers

Define wattless current.

Current without consuming electrical power Signup and view all the answers

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 Signup and view all the answers

What is one way to reduce iron loss in a transformer?

Using a laminated iron core Signup and view all the answers

Why are electromagnetic waves considered transverse in nature?

Sinusoidal variations of electric and magnetic field vectors at right angles to propagation Signup and view all the answers

How are electromagnetic waves produced?

By accelerated or oscillating charges Signup and view all the answers