Question

True or false.

1. When a neutral glass rod is rubbed with a neutral silk cloth, the rod acquires a positive charge as the cloth acquires a negative charge as protons are transferred from the cloth to the rod

2. When an electron is taken from point A to point B along an electric field line that points from B to A, the electric potential energy of the system decreases

3. When a point charge is moved from point A to point B in an electric field, the total work done depends on the path that it takes

4. Three equivalent resistors wired in parallel have an effective resistance across the entire network that is equal to three times the value of a single resistor

5. A constant potential difference is maintained between the ends of a piece of wire. If the length of the wire is doubled, with no change to its cross sectional area, the current flowing through the wire is halved

6. A metal ring lies on a horizontal table. If the ring carries a clockwise current, a magnetic field will be generated that points into the table at the center of the ring

Answer #1

Hii

Any query in solution then leave a comment

Please give me your valuable feedback

Thanks

A very thin glass rod 4 meters long is rubbed all over with a
silk cloth. It gains a uniformly distributed charge 1.7 ✕
10−6 C. Two small spherical rubber balloons of radius
1.2 cm are rubbed all over with wool. They each gain a uniformly
distributed charge of -3 ✕ 10−8 C. The balloons are near
the midpoint of the glass rod, with their centers 3 cm from the
rod. The balloons are 2 cm apart (4.4 cm between...

1-
A U-shaped conductor and conducting rod are used to form a
slidewire generator. The generator lies in the xy plane
with its conducting rod being parallel to the y axis and
sliding along the positive x axis. A uniform magnetic
field is applied in the positive z direction. If the
velocity of the rod is doubled, what happens to the power
dissipated by the generator's resistance?
-It is quadrupled
- It is doubled
-It stays the same
-It is...

How strong is the attractive force between a glass rod with a
+0.9 µC charge and a silk cloth with a -0.5 µC charge, which are
15.0 cm apart, using the approximation that they act like point
charges?
A.
0.26 N
B.
1.8x1011 N
C.
0.18 N
D.
0.027 N
Find the electric field at the location of qa using
the figure below given that qb = qc =
qd = +2.0 nC and q = -1.0 nC, and the...

1.
It is Friday night and Dr. J's classroom is full of eager young
students. Yes, it's the weekly meeting of the Wizards of Oz, a club
for bright preteens interested in science. This particular night is
even more special because new members will be officially received
into the club. Dr. J had been attracted to the group over a year
ago and, after rubbing shoulders with the youngsters, his interest
was sparked. His attitude grew more positive over the...

1. Which of the following statements about the direction of a
magnetic force is always true? (Note: More than one answer choice
may be correct)
a)The direction of the magnetic force on a moving charged particle
is parallel to the direction of the external magnetic field.
b)The direction of the magnetic force on a moving charged particle
is parallel to the direction of the charged particle's
velocity.
c)The direction of the magnetic force on a moving charged particle
is perpendicular...

A proton is moving in a circle due to an external magnetic field
of 8 mT. What radius is this circle if the proton is traveling at
4e5 m/s?
3.89 m
None of the above
3.2 mm
0.52 m
1.92 m
A wire is carrying 2 mA of current in a direction into the page.
What is the magnitude and direction of the magnetic field 3 cm to
the right of the wire?
4.19e-8 upwards
1.33e-8 T downwards
1.83e-8 T...

Please provide a brief overview on:
chapter 21
1. Can I obtain the net electric field due to two or
more point charges?
2. Can I obtain the net Coulomb force on a point charge
due to two or more point charges?
3. Can I draw physical quantities (for example,
velocity, forces or electric fields) involved in a given problem in
a diagram?
4. Do I have a good "qualitative" understanding of the
motion of a charged particle in a...

1) 2 point charges are separated by a distance of 8 cm. The left
charge is 48 mC and the right charge is -16mC. Using a full sheet
of paper: draw the 2 charges separated by 8cm, centered in the
sheet. (if you are missing a ruler estimate 8cm as ⅓ a paper sheet
length). [6] a) Draw field lines to indicate the electric fields
for this distribution. [4] b) Draw 3 equipotential surfaces, 1
each, that pass: -Through the...

What is the change in length of a metal rod with an original
length of 4 m, a coefficient of thermal expansion of 0.00002/ ° C,
and a temperature change of 30° C?
1.
2.4 mm
2.
12 mm
3.
1.2 mm
4.
24 mm
Determine the number of electrons passing through a point in the
wire in 8 minutes when the current is 10 A.
a.
3 * 1016 electrons
b.
none of these
c.
4,800 electrons
d.
1.6...

ADVERTISEMENT

Get Answers For Free

Most questions answered within 1 hours.

ADVERTISEMENT

asked 34 minutes ago

asked 42 minutes ago

asked 56 minutes ago

asked 56 minutes ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 2 hours ago

asked 2 hours ago

asked 2 hours ago

asked 2 hours ago