Transcript Ch29

Chapter 29
The positive charge is the end
view of a positively charged
glass rod. A negatively charged
particle moves in a circular arc
around the glass rod. Is the work
done on the charged particle by
the rod’s electric field positive,
negative or zero?
1. Positive
2. Negative
3. Zero
The positive charge is the end
view of a positively charged
glass rod. A negatively charged
particle moves in a circular arc
around the glass rod. Is the work
done on the charged particle by
the rod’s electric field positive,
negative or zero?
1. Positive
2. Negative
3. Zero
Rank in order, from largest to smallest, the potential
energies Ua to Ud of these four pairs of charges.
Each + symbol represents the same amount of charge.
1.
2.
3.
4.
5.
Ua = Ub > Uc = Ud
Ua = Uc > Ub = Ud
Ub = Ud > Ua = Uc
Ud > Ub = Uc > Ua
Ud > Uc > Ub > Ua
Rank in order, from largest to smallest, the potential
energies Ua to Ud of these four pairs of charges.
Each + symbol represents the same amount of charge.
1.
2.
3.
4.
5.
Ua = Ub > Uc = Ud
Ua = Uc > Ub = Ud
Ub = Ud > Ua = Uc
Ud > Ub = Uc > Ua
Ud > Uc > Ub > Ua
A proton is released
from rest at point B,
where the potential
is 0 V. Afterward,
the proton
1. moves toward A with an increasing speed.
2. moves toward A with a steady speed.
3. remains at rest at B.
4. moves toward C with a steady speed.
5. moves toward C with an increasing speed.
A proton is released
from rest at point B,
where the potential
is 0 V. Afterward,
the proton
1. moves toward A with an increasing speed.
2. moves toward A with a steady speed.
3. remains at rest at B.
4. moves toward C with a steady speed.
5. moves toward C with an increasing speed.
Rank in order, from
largest to smallest, the
potentials Va to Ve at the
points a to e.
1.
2.
3.
4.
5.
Va = Vb = Vc = Vd = Ve
Va = Vb > Vc > Vd = Ve
Vd = Ve > Vc > Va = Vb
Vb = Vc = Ve > Va = Vd
Va = Vb = Vd = Ve > Vc
Rank in order, from
largest to smallest, the
potentials Va to Ve at the
points a to e.
1.
2.
3.
4.
5.
Va = Vb = Vc = Vd = Ve
Va = Vb > Vc > Vd = Ve
Vd = Ve > Vc > Va = Vb
Vb = Vc = Ve > Va = Vd
Va = Vb = Vd = Ve > Vc
Rank in order, from largest to
smallest, the potential
differences ∆V12, ∆V13, and
∆V23 between points 1 and 2,
points 1 and 3, and points 2
and 3.
1.
2.
3.
4.
5.
∆V12 > ∆V13 = ∆V23
∆V13 > ∆V12 > ∆V23
∆V13 > ∆V23 > ∆V12
∆V13 = ∆V23 > ∆V12
∆V23 > ∆V12 > ∆V13
Rank in order, from largest to
smallest, the potential
differences ∆V12, ∆V13, and
∆V23 between points 1 and 2,
points 1 and 3, and points 2
and 3.
1.
2.
3.
4.
5.
∆V12 > ∆V13 = ∆V23
∆V13 > ∆V12 > ∆V23
∆V13 > ∆V23 > ∆V12
∆V13 = ∆V23 > ∆V12
∆V23 > ∆V12 > ∆V13
Chapter 29
Reading Quiz
What are the units of potential difference?
1. Amperes
2. Potentiometers
3. Farads
4. Volts
5. Henrys
What are the units of potential difference?
1. Amperes
2. Potentiometers
3. Farads
4. Volts
5. Henrys
New units of the electric field were introduced in
this chapter. They are:
1. V/C.
2. N/C.
3. V/m.
4. J/m2.
5. W/m.
New units of the electric field were introduced in
this chapter. They are:
1. V/C.
2. N/C.
3. V/m.
4. J/m2.
5. W/m.
The electric potential inside a capacitor
1. is constant.
2. increases linearly from the negative to
the positive plate.
3. decreases linearly from the negative to
the positive plate.
4. decreases inversely with distance from
the negative plate.
5. decreases inversely with the square of the
distance from the negative plate.
The electric potential inside a capacitor
1. is constant.
2. increases linearly from the negative to
the positive plate.
3. decreases linearly from the negative to
the positive plate.
4. decreases inversely with distance from
the negative plate.
5. decreases inversely with the square of the
distance from the negative plate.