Transcript Ch26 - Department of Physics

Chapter 26
At the position of
the dot, the electric
field points
1. Left.
2. Down.
3. Right.
4. Up.
5. The electric field is zero.
At the position of
the dot, the electric
field points
1. Left.
2. Down.
3. Right.
4. Up.
5. The electric field is zero.
A piece of plastic is uniformly charged with surface
charge density 1. The plastic is then broken into a large
piece with surface charge density 2 and a small piece
with surface charge density 3. Rank in order, from largest
to smallest, the surface charge densities 1 to 3.
1P > η2 > η3
2. η1 > η2 = η3
3. η1 = η2 = η3
4. η2 = η3 > η1
5. η3 > η2 > η1
A piece of plastic is uniformly charged with surface
charge density 1. The plastic is then broken into a large
piece with surface charge density 2 and a small piece
with surface charge density 3. Rank in order, from largest
to smallest, the surface charge densities 1 to 3.
1.
2.
3.
4.
5.
η1 > η2 > η3
η1 > η2 = η3
η1 = η2 = η3
η2 = η3 > η1
η3 > η2 > η1
Which of the following actions
will increase the electric field
strength at the position of the dot?
1. Make the rod longer without changing the charge.
2. Make the rod shorter without changing the charge.
3. Make the rod fatter without changing the charge.
4. Make the rod narrower without changing the charge.
5. Remove charge from the rod.
Which of the following actions
will increase the electric field
strength at the position of the dot?
1. Make the rod longer without changing the charge.
2. Make the rod shorter without changing the charge.
3. Make the rod fatter without changing the charge.
4. Make the rod narrower without changing the charge.
5. Remove charge from the rod.
Rank in order, from
largest to smallest, the
electric field strengths
Ea to Ee at these five
points near a plane of
charge.
1.
2.
3.
4.
5.
Ea = Eb = Ec = Ed = Ee
Ea > Ec > Eb > Ee > Ed
Eb = Ec = Ed = Ee > Ea
Ea > Eb = Ec > Ed = Ee
Ee > Ed > Ec > Eb > Ea
Rank in order, from
largest to smallest, the
electric field strengths
Ea to Ee at these five
points near a plane of
charge.
1. Ea = Eb = Ec = Ed = Ee
2. Ea > Ec > Eb > Ee > Ed
3. Eb = Ec = Ed = Ee > Ea
4. Ea > Eb = Ec > Ed = Ee
5. Ee > Ed > Ec > Eb > Ea
Rank in order, from largest
to smallest, the forces Fa to
Fe a proton would
experience if placed at
points a – e in this parallelplate capacitor.
1.
2.
3.
4.
5.
Fa = Fb = Fc = Fd = Fe
Fa = Fb > Fc > Fd = Fe
Fa = Fb = Fd = Fe > Fc
Fe > Fd > Fc > Fb > Fa
Fe = Fd > Fc > Fa = Fb
Rank in order, from largest
to smallest, the forces Fa to
Fe a proton would
experience if placed at
points a – e in this parallelplate capacitor.
1.
2.
3.
4.
5.
Fa = Fb = Fc = Fd = Fe
Fa = Fb > Fc > Fd = Fe
Fa = Fb = Fd = Fe > Fc
Fe > Fd > Fc > Fb > Fa
Fe = Fd > Fc > Fa = Fb
Which electric field is
responsible for the
trajectory of the proton?
(1)
(2)
(3)
(4)
(5)
Which electric field is
responsible for the
trajectory of the proton?
(1)
(2)
(3)
(4)
(5)
Chapter 26
Reading Quiz
What device provides a practical way to produce
a uniform electric field?
1. A long thin resistor
2. A Faraday cage
3. A parallel plate capacitor
4. A toroidal inductor
5. An electric field uniformizer
What device provides a practical way to produce
a uniform electric field?
1. A long thin resistor
2. A Faraday cage
3. A parallel plate capacitor
4. A toroidal inductor
5. An electric field uniformizer
For charged particles, what is the quantity q/m called?
1. Linear charge density
2. Charge-to-mass ratio
3. Charged mass density
4. Massive electric dipole
5. Quadrupole moment
For charged particles, what is the quantity q/m called?
1. Linear charge density
2. Charge-to-mass ratio
3. Charged mass density
4. Massive electric dipole
5. Quadrupole moment
Which of these charge distributions did not have its
electric field calculated in Chapter 26?
1. A line of charge
2. A parallel-plate capacitor
3. A ring of charge
4. A plane of charge
5. They were all calculated
Which of these charge distributions did not have its
electric field calculated in Chapter 26?
1. A line of charge
2. A parallel-plate capacitor
3. A ring of charge
4. A plane of charge
5. They were all calculated
The worked examples of charged-particle motion are
relevant to
1. a transistor.
2. a cathode ray tube.
3. magnetic resonance imaging.
4. cosmic rays.
5. lasers.
The worked examples of charged-particle motion are
relevant to
1. a transistor.
2. a cathode ray tube.
3. magnetic resonance imaging.
4. cosmic rays.
5. lasers.