Electromagnetics Lecture 1-4 (SHORT)

John Anthony Yumul
Quiz by John Anthony Yumul, updated more than 1 year ago
John Anthony Yumul
Created by John Anthony Yumul about 3 years ago
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Electromagnetics Lecture 1-4

Resource summary

Question 1

Question
The work done in moving a charge in an equipotential surface is ___________.
Answer
  • always zero
  • sometimes zero
  • never zero
  • cannot be determined

Question 2

Question
The electric field is directed ____________.
Answer
  • along equipotential surfaces
  • from higher to lower potential
  • from positive to negative charges
  • more than one of the choices

Question 3

Question
The change in potential energy of a unit charge between 2 points in an electric field ________
Answer
  • Electric potential difference
  • Work
  • Electric field density
  • None of the choices

Question 4

Question
The law of conservation of charge implies ________.
Answer
  • Electrons are not created or destroyed
  • Charge is simply transferred from one thing to another
  • Charge is conserved
  • All of the above

Question 5

Question
The relative permittivity of free space is ?
Answer
  • 0
  • 1
  • either 0 or 1
  • cannot be determined

Question 6

Question
A point charge Q is moved along a circular path around another fixed point charge. The work done is ______.
Answer
  • when all the charges are of the same magnitude
  • when the charges are dipoles
  • when Q returns to the starting point
  • all of the above

Question 7

Question
If charges are similar, the force must be __________
Answer
  • attractive
  • repulsive
  • neither of the two
  • all of the above

Question 8

Question
The ability of charged bodies to exert force on one another is attributed to the existence of ____.
Answer
  • Electrons
  • Electric Field
  • Protons
  • more than one of the choices

Question 9

Question
It is the energy of a charged object possessed because of its location in an electric field. _________.
Answer
  • Electric Field
  • Electric Field Intensity
  • Electric Potential Energy
  • more than one of the choices

Question 10

Question
Which of the statements is true?
Answer
  • Particle A has twice the charge of particle B. Particle A exerts on force B that is twice as B.
  • The work done in an equipotential surface is sometimes zero
  • If a positively charged metallic rod touches a neutral metallic sphere. The electrons will move from sphere to rod.
  • none of the choices
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