PHYS 2002 MIDTERM ACTUAL QUESTIONS
WITH VERIFIED SOLUTIONS
◉ What does the electric field around a neg point charge look like?
Answer: opposite of positive
◉ The more/less field lines you have per unit volume (density), the
stronger the field.
Answer: more
◉ What is the formula for charge density? The units?
Answer: q/A (C/ m^2)
◉ Does the electric field depend on distance between 2 plates in a
parallel plate capacitor?
Answer: no
◉ Where does charge reside in a conductor in equilibrium?
Answer: surface
◉ Charges in a conductor move around until the electric field is ____.
,Answer: 0
◉ What happens when a conductor is placed in a capacitor?
Answer: surface charges appear and distort electric field
◉ The electric field is always ______ to the surface.
Answer: perpendicular
◉ What does the electric field describe?
Answer: the force another charge q would feel
◉ What is electric flux?
Answer: measure of how much field passes perpendicularly through
a surface
◉ When is the flux the largest?
Answer: if the electric field is perpendicular to the surface
◉ What does Gauss' law say?
Answer: the flux through a closed surface is determined by the
charge enclosed by the surface
, ◉ What are the units for electric flux?
Answer: N/C m^2
◉ Is electric force conservative or nonconservative?
Answer: conservative
◉ What is the formula for work of an electric force?
Answer: W= qE(Ya-Yb)
◉ Electrostatic potential energy is in what units?
Answer: volts which is J/C
◉ Is electric potential a vector?
Answer: no
◉ Are forces and electric fields vectors?
Answer: yes
◉ Voltage is always higher at the + or - end?
Answer: +
WITH VERIFIED SOLUTIONS
◉ What does the electric field around a neg point charge look like?
Answer: opposite of positive
◉ The more/less field lines you have per unit volume (density), the
stronger the field.
Answer: more
◉ What is the formula for charge density? The units?
Answer: q/A (C/ m^2)
◉ Does the electric field depend on distance between 2 plates in a
parallel plate capacitor?
Answer: no
◉ Where does charge reside in a conductor in equilibrium?
Answer: surface
◉ Charges in a conductor move around until the electric field is ____.
,Answer: 0
◉ What happens when a conductor is placed in a capacitor?
Answer: surface charges appear and distort electric field
◉ The electric field is always ______ to the surface.
Answer: perpendicular
◉ What does the electric field describe?
Answer: the force another charge q would feel
◉ What is electric flux?
Answer: measure of how much field passes perpendicularly through
a surface
◉ When is the flux the largest?
Answer: if the electric field is perpendicular to the surface
◉ What does Gauss' law say?
Answer: the flux through a closed surface is determined by the
charge enclosed by the surface
, ◉ What are the units for electric flux?
Answer: N/C m^2
◉ Is electric force conservative or nonconservative?
Answer: conservative
◉ What is the formula for work of an electric force?
Answer: W= qE(Ya-Yb)
◉ Electrostatic potential energy is in what units?
Answer: volts which is J/C
◉ Is electric potential a vector?
Answer: no
◉ Are forces and electric fields vectors?
Answer: yes
◉ Voltage is always higher at the + or - end?
Answer: +
