1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Arada [10]
3 years ago
5

A real battery with internal resistance 0.460 Ω and emf 9.00 V is used to charge a 56.0-µF capacitor. A 21.0-Ω resistor is put i

n series with the battery and the capacitor when charging. (a) What is the time constant for this circuit?
Physics
2 answers:
Sphinxa [80]3 years ago
6 0

Given Information:

Internal resistance of battery = 0.460

Resistance = 21.0 Ω

Capacitance = 56.0 µF

Required Information:

time constant = τ = ?

Answer:

τ = 0.0012

Explanation:

The time constant τ provides the information about how long it will take to charge the capacitor up to certain level.

τ = Req*C

Where Req is the equivalent resistance and C is the capacitance.

Req = R + r

Where R is the resistance of the resistor and r is the internal resistance of the battery.

Req = 21.0 + 0.460 = 21.460 Ω

τ = Req*C

τ = 21.46*56x10⁻⁶

τ = 0.0012

A capacitor approximately charges to 63% in one τ and about 99% in 5τ

Margaret [11]3 years ago
4 0

Answer: 1.176×10^-3 s

Explanation: The time constant formulae for an RC circuit is given below as

t =RC

Where t = time constant , R = magnitude of resistance = 21 ohms , C = capacitance of capacitor = 56 uf = 56×10^-6 F

t = 56×10^-6 × 21

t = 1176×10^-6

t = 1.176×10^-3 s

You might be interested in
What happens when a star exhausts its core hydrogen supply?
Allushta [10]

Answer:

It becomes a giant or supergiant.

Explanation:

Once all the hydrogen supply is gone, fusion of hydrogen into helium stops. The core starts to contract and liberates energy, which heats the superior layer until it becomes hot enough to start the fusion of hydrogen into helium.

6 0
3 years ago
What is energy and types of energy<br>​
pishuonlain [190]
Energy- the ability to do work/how things can change and move

Types
Potential Energy
Kinetic Energy
Nuclear Energy
Mechanical Energy
Sound Energy
Heat
8 0
2 years ago
Read 2 more answers
A baseball player hits a baseball with a bat. The mass of the ball is 0.25 kg. The ball accelerates at 200 m/s2
EastWind [94]

Answer:

50N

Explanation:

Force (N) = mass (kg) × acceleration (m/s²)

0.25kg times 200m/s² = 50N

7 0
2 years ago
Answer fast nnjkxkdivk
siniylev [52]
Sdhdmzir d sjdurkshrjeidnrjddneuxneixfnsidnrjxcbfnxudnx
4 0
3 years ago
Which of the three recording stations was closest to the epicenter of the earthquake, based on the seismograms shown below?
Nastasia [14]

Answer:C

Explanation:took quiz

3 0
3 years ago
Read 2 more answers
Other questions:
  • What are some common forces that make it difficult for humans to
    10·1 answer
  • HELP NOW PLEASE The negatively charged particle that is released from the nucleus at high speeds is the _____.
    9·1 answer
  • Wire A carries 4 A into a junction, wire B carries 5 A into the same junction, and another wire is connected to the junction. Wh
    12·1 answer
  • What is the acceleration of this object? The object's mass is 60 kg.
    13·2 answers
  • A 26.3 kg object is traveling at 21.0 m/s north. What average net force is required to bring this object to a stop in 2.60 secon
    13·1 answer
  • Please help, I am stumped.
    13·2 answers
  • ‏Let's say that the teacher raised the lawn bowling ball to a height of 1.6 meters before they released it . THE LAWN BOWLING BA
    5·1 answer
  • The thermal energy in a hot iron flows into a shirt. What can possibly be said about this situation?
    7·1 answer
  • 4. A steel rod is 5 cm x 5 cm x 120 cm. If steel has a density of 7.80 g/cm', what is the
    6·1 answer
  • Listed in the Item Bank are some important labels for sections of the image below. To find out more information about labels, so
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!