Question

The electric field strength is 2.30×104 N/C inside a parallel-plate capacitor with a 0.700 mm spacing. An electron is released from rest at the negative plate. Part A What is the electron's speed when it reaches the positive plate? Express your answer with the appropriate units.

Answer #1

Where e is the charge of electron, E is the electric field and d is
the distance between the plates.

E = 2.30 x 10^{4} N/C, d = 0.7 mm = 7 x 10^{-4}
m

Electric potential energy is converted into kinetic energy of
electron.

eEd = 1/2 mv^{2}

Where m is the mass of electron and v is the final velocity

v^{2} = 2eEd/m

v = SQRT[2eEd/m]

Substituting values,

v = SQRT[(2 x 1.60 x 10^{-19} x 2.30 x 10^{4} x 7 x
10^{-4}) / (9.11 x 10^{-31})]

= SQRT[(51.52 x 10^{-19}) / (9.11 x
10^{-31})]

= SQRT(5.66 x 10^{12})

= 2.38 x 10^{6} m/s

The electric field strength is 1.80×104 N/C inside a
parallel-plate capacitor with a 1.50 mm spacing. An electron is
released from rest at the negative plate.
What is the electron's speed when it reaches the positive
plate?

The electric field strength is 5.50×104 N/C inside a
parallel-plate capacitor with a 2.00 mm spacing. A proton is
released from rest at the positive plate.
What is the proton's speed when it reaches the negative
plate?
Express your answer with the appropriate units.

An electron is released from the negative plate of a parallel
plate capacitor with an internal field strength of 2.5×104 V/m and
a 1.5 mm spacing. (a) What is the speed of the electron once it
reaches the positive plate? (b) What is the electron’s
acceleration?

Two 2.3-cm-diameter-disks spaced 1.6 mm apart form a
parallel-plate capacitor. The electric field between the disks is
5.0×105 V/m . Part A Part complete What is the voltage across the
capacitor? Express your answer with the appropriate units. V = 800
V Previous Answers Correct Part B How much charge is on each disk?
Enter your answers numerically separated by a comma. Express your
answers in coulombs. q1, q2 = 1.836⋅10−9,1.836⋅10−9 C Previous
AnswersRequest Answer Incorrect; Try Again; 5 attempts...

Two 2.1- cm -diameter-disks spaced 1.5 mm apart form a
parallel-plate capacitor. The electric field between the disks is
4.3×105 V/m . V=645V
Part B How much charge is on each disk? Enter your answers
numerically separated by a comma. Express your answers in
coulombs.
Part C An electron is launched from the negative plate. It
strikes the positive plate t a speed of 2.5×10^7 m/s . What was the
electron's speed as it left the negative plate?

Two 2.3-cm-diameter-disks spaced 2.0 mm apart form a
parallel-plate capacitor. The electric field between the disks is
4.6×105 V/m .
Part A
What is the voltage across the capacitor?
Part B
How much charge is on each disk?
Part C
An electron is launched from the negative plate. It strikes the
positive plate at a speed of 2.3×107 m/s . What was the
electron's speed as it left the negative plate?

Two 2.2-cm-diameter-disks spaced 1.9 mm apart form a
parallel-plate capacitor. The electric field between the disks is
4.8×105 V/m .
a) How much charge is on each disk?
b) An electron is launched from the negative plate. It strikes
the positive plate at a speed of 2.0×107 m/s . What was the
electron's speed as it left the negative plate?

A proton is released from rest at the positive plate of a
parallel-plate capacitor. It crosses the capacitor and reaches the
negative plate with a speed of 54000 m/s
What will be the final speed of an electron released from rest
at the negative plate?

Two 3.00 cm × 3.00 cm plates that form a parallel-plate
capacitor are charged to ± 0.708 nC . What is the electric field
strength inside the capacitor if the spacing between the plates is
1.20 mm ? What is potential difference across the capacitor if the
spacing between the plates is 1.20 mm? What is the electric field
strength inside the capacitor if the spacing between the plates is
2.40 mm ? What is the potential difference across the...

Two 2.40 cm × 2.40 cm plates that form a parallel-plate
capacitor are charged to ± 0.708 nC .
A. What is the electric field strength inside the capacitor if
the spacing between the plates is 1.00 mm ?
B. What is potential difference across the capacitor if the
spacing between the plates is 1.00 mm ?
C. What is the electric field strength inside the capacitor if
the spacing between the plates is 2.00 mm ?
D. What is...

ADVERTISEMENT

Get Answers For Free

Most questions answered within 1 hours.

ADVERTISEMENT

asked 10 minutes ago

asked 15 minutes ago

asked 42 minutes ago

asked 48 minutes ago

asked 51 minutes ago

asked 54 minutes ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago