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
ladessa [460]
3 years ago
13

A vacuum tube can be used to__. A. change alternating current into direct current B. increase the strength of a signal.. C. turn

a current on or off D. all of the above
Physics
2 answers:
Genrish500 [490]3 years ago
7 0

Option (D) is correct. All of the above options are correct.

Further Explanation:

If two electrodes are inserted inside a vacuum tube under the proper physical condition then the complete system can behave as a rectifier which can be used to convert the alternating current into the direct current.

One can also insert a controller grid inside the vacuum tube which can easily control the strength of the signal passed through it and also help in increasing the strength of the signal

Whereas on the other hand a vacuum tube considered as a bad conductor and therefore, it the current passed through a vacuum area, then the current flow in the region will be hindered and therefore, the vacuum tube can be used as a switch to turn on and off the current.

Therefore, the above explanations suggest that all of the options are correct.

Thus, Option (D) is correct. All of the above options are correct.

Learn More:

1. How is the power defined brainly.com/question/911620

2. Which of the following statements about electromagnetic radiation are true brainly.com/question/1619496

3. What evidence is there that electrons move around in definite pathways around the nucleus brainly.com/question/2927304

Answer Details:

Grade: High School

Subject: Physics

Chapter: Current Electricity

Keywords:

Vacuum tube, change alternating current, direct current, strength of signal, turn on and off, bad conductor, electrodes in vacuum chamber.

vesna_86 [32]3 years ago
4 0

The correct answer of this question is :  A) Change alternating current into direct current.

EXPLANATION :

As per the question, we are given vacuum tube. Vacuum tube can be of various types. Normally it contains two electrodes called cathode and anode which are enclosed in an evacuated glass chamber . There are also other types of vacuum tubes which contain extra electrodes like control grid .

The vacuum tube can be used as a rectifier. It means that it can be used as an electronic device which will convert alternating current into direct current. It may be a half wave rectifier or a full wave rectifier. Actually the direct current obtained during the rectification of alternating current is pulsating in nature.

Hence, the correct answer is that a vacuum tube can be used to change alternating current into direct current.


You might be interested in
What did you notice about the angle of incidence and the angle of reflection?
Readme [11.4K]

Answer:

They are equal

Explanation:

angle of incidence = angle of reflection

6 0
1 year ago
Both mechanical and electromagnetic waves
xenn [34]

Answer:

transmit energy

Explanation:

hope this helps u stay safe

6 0
3 years ago
Which term describes speed in a certain direction?
11Alexandr11 [23.1K]

Answer:

A. Velocity

Explanation:

Velocity is vector quantity thus has both magnitude and direction. It describes not only the speed but also the direction. Speed is scalar quantity so describes only speed but not direction. Energy has nothing to do with speed, acceleration describes change in velocity in a direction over time

8 0
2 years ago
Read 2 more answers
Estimate the volume of a human heart (in mL) using the following measurements/assumptions:_______.
uysha [10]

Answer:

Explanation:

radius of aorta = 1.5 cm

cross sectional area = π r²

= 3.14 x 1.5²

= 7.065 cm²

volume of blood flowing out per second out of heart

= a x v , a is cross sectional area , v is velocity of flow

= 7.065 x 11.2

= 79.128 cm³

heart beat per second = 67 / 60

= 1.116666

If V be the volume of heart

1.116666 V = 79.128

V = 70.86 cm³.

3 0
3 years ago
An object on the moon feels lighter than the same object on earth. which statement explains this phenomenon?
natka813 [3]

Answer:

B

Explanation:

cause

7 0
2 years ago
Other questions:
  • Give two ways in which the water vapour changes as it passes down the glass tube in the condenser
    12·1 answer
  • How is a habitat different from an ecosystem?
    14·2 answers
  • When a steady direct current flows through a coil, the only opposition to the flow of current is the resistance of the wire from
    11·1 answer
  • A 0.311 kg tennis racket moving 30.3 m/s east makes an elastic collision with a 0.0570 kg ball moving 19.2 m/s west. Find the ve
    14·1 answer
  • What factors contribute to global winds
    7·1 answer
  • A 1200 kg car carrying four 80 kg people travels over a rough "washboard" dirt road with corrugations 4.0 m apart which causes t
    14·1 answer
  • A compact car, mass 660 kg, is moving at 1.00 ✕ 102 km/h toward the east. The driver of the compact car suddenly applies the bra
    12·2 answers
  • A 4kg box accelerated from rest by a force across the floor at a rate of 2m/s^2 for 7 seconds. What is the net work done on the
    14·2 answers
  • The average velocity of a tennis ball is measured during serving and found to be 216 km/hr.
    9·1 answer
  • Which process of ammonia processing will Eden use? Eden owns a fertilizer manufacturing factory. Ammonia is used to prepare nitr
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!