JAMB Exam > JAMB Videos > Physics for JAMB > Introduction to Alternating Current
Introduction to Alternating Current Video Lecture | Physics for JAMB
FAQs on Introduction to Alternating Current Video Lecture - Physics for JAMB
| 1. What is alternating current (AC)? |  |
Ans. Alternating current (AC) is an electric current that periodically changes its direction. It flows in a two-way alternating fashion, constantly reversing its polarity. This type of current is commonly used in homes and businesses to power electrical devices.
| 2. How is alternating current generated? | |
Ans. Alternating current is generated using devices called alternators or generators. These devices convert mechanical energy into electrical energy by rotating a coil of wire within a magnetic field. As the coil rotates, it produces an alternating current due to the changing magnetic field.
| 3. What are the advantages of alternating current over direct current? | |
Ans. Alternating current has several advantages over direct current. Firstly, AC can be easily transformed to different voltage levels using transformers, which is crucial for long-distance power transmission. Additionally, AC can be generated more efficiently and at higher voltages, reducing energy losses during transmission. AC is also safer to use as it can be easily controlled and interrupted.
| 4. What are the applications of alternating current? | |
Ans. Alternating current finds a wide range of applications in our daily lives. It is used to power electrical appliances in homes, offices, and industries. AC is essential for operating electric motors, refrigerators, air conditioners, and lighting systems. It is also used in electric vehicles, power grids, and various electronic devices.
| 5. What is the frequency of alternating current? | |
Ans. The frequency of alternating current refers to the number of complete cycles it completes per second. In most countries, the standard frequency for AC power is 50 or 60 hertz (Hz). A frequency of 50 Hz means that the current changes direction 50 times in one second, while a frequency of 60 Hz indicates 60 changes in direction per second.
About this Video
3.1K Views
4.97/5
Rating
Sep 03, 2025
Last updated
Video Description: Introduction to Alternating Current for JAMB 2025 is part of Physics for JAMB preparation.
The notes and questions for Introduction to Alternating Current have been prepared according to the JAMB exam syllabus.
Information about Introduction to Alternating Current covers all important topics for JAMB 2025 Exam.
Find important definitions, questions, notes, meanings, examples, exercises and tests below for Introduction to Alternating Current.
Introduction of Introduction to Alternating Current in English is available as part of our Physics for JAMB for JAMB & Introduction to Alternating Current in
Hindi for Physics for JAMB course. Download more important topics related with notes, lectures and mock test series for
JAMB Exam by signing up for free.
Description
Video Lecture & Questions for Introduction to Alternating Current Video Lecture | Physics for JAMB - JAMB full syllabus preparation | Free video for JAMB exam to prepare for Physics for JAMB.
Information about Introduction to Alternating Current
Here you can find the meaning of Introduction to Alternating Current defined & explained in the simplest way possible.
Besides explaining types of Introduction to Alternating Current theory, EduRev gives you an ample number of questions to practice Introduction to Alternating Current tests,
examples and also practice JAMB tests.
Related Searches
study material
,MCQs
,Free
,Extra Questions
,past year papers
,Introduction to Alternating Current Video Lecture | Physics for JAMB
,Objective type Questions
,shortcuts and tricks
,Semester Notes
,Introduction to Alternating Current Video Lecture | Physics for JAMB
,Viva Questions
,Previous Year Questions with Solutions
,Important questions
,Summary
,ppt
,practice quizzes
,Introduction to Alternating Current Video Lecture | Physics for JAMB
,Exam
,mock tests for examination
,video lectures
,Sample Paper
;
Study Introduction to Alternating Current on the App
Students of JAMB can study Introduction to Alternating Current alongwith tests & analysis from the EduRev app,
which will help them while preparing for their exam. Apart from the Introduction to Alternating Current,
students can also utilize the EduRev App for other study materials such as previous year question papers, syllabus, important questions, etc.
The EduRev App will make your learning easier as you can access it from anywhere you want.
The content of Introduction to Alternating Current is prepared as per the latest JAMB syllabus.
|
© EduRev
|
Education Revolution
|
|
Signup on EduRev and stay on top of your study goals
10M+ students crushing their study goals daily