The current in a circuit follows the relation i = 100sin?t. If frequency is 25 Hz, how long will it take for the current to rise to 50 A ? a.) 1 ms. b.) 3.33 ms. c.) 10 ms. d.) 20 ms.

Asked by Last Modified  

9 Answers

Learn Class XI-XII Tuition (PUC)

Follow 7
Answer

Please enter your answer

i= sin wt f= 25 HZ w= 2×pi×f t=? 50=100 sin wt 50=100 sin (2×180×25) t 50/100= sin 9000 t 1/2=sin 9000 t Sin-' (1/2)= 9000t sin -' (1/2)=30 30= 9000 t t = 30/9000 t = 1/300 = 3.33 ms.
read more
i= sin wt f= 25 HZ w= 2×pi×f t=? 50=100 sin wt 50=100 sin (2×180×25) t 50/100= sin 9000 t 1/2=sin 9000 t Sin-' (1/2)= 9000t sin -' (1/2)=30 30= 9000 t t = 30/9000 t = 1/300 = 3.33 ms. read less
Comments
Dislike Bookmark

Specialization in Organic Chemistry. Teaching Chemistry has always been my passion.

B) 3.33 ms
Comments
Dislike Bookmark

Headstart to assured 95+ score in math

Please repost the query
Comments
Dislike Bookmark

Power To Teach

50=100sin(2pi25) t after solving we get t=3.33ms
Comments
Dislike Bookmark

Trainer

Solution: i = 100 sin(wt) 50=100 Sin(wt) wt = Arc Sin(1/2)= pi/6 radians but w = 2 pi 25hz= 50 pi wt = 50 pi t= pi/6 t= pi/6w= pi/( 6 x 50 pi) = 3.36 ms
Comments
Dislike Bookmark

Don't want to over express myself, just join and feel the experience.

b
Comments
Dislike Bookmark

PHYSICS MENTOR

3.33ms
Comments
Dislike Bookmark

Physics Projectile

3.33ms, as for I to be 50A sinwt needs to be half..
Comments
Dislike Bookmark

B
Comments
Dislike Bookmark

View 7 more Answers

Related Questions

In a certain store, the profit is 320% of the cost. If the cost increases by 25% but the selling price remains constant, approximately what percentage of the selling price is the profit? A. 30% B. 70% C. 100% D. 250%
Let C.P.= Rs. 100. Then, Profit = Rs. 320, S.P. = Rs. 420. New C.P. = 125% of Rs. 100 = Rs. 125 New S.P. = Rs. 420. Profit = Rs. (420 - 125) = Rs. 295. Required percentage = 295 x 100 % = 1475 % = 70% (approximately). 420 21 ans=70%
Srikanth
0 0
8
What are the differences between anode and cathode?
Anode and cathode are two terms that are often used interchangeably with positive and negative in batteries. The anode, by definition, is the electrode where electricity flows into. In contrast, the cathode...
S.meenakshi
0 0
8
What is the syllabus of history for class XII CBSE board?
Hello Sangeeta, There are three parts in The Indian History: You can download the syllabus for Part I, Part II & Part III including the books from the links below: http://ncert.nic.in/NCERTS/textbook/textbook.htm?lehs1=ps-4...
Sangeeta Sahay
The minimum energy of an electron that must have in order to escape from the metal surface is called __________. (Stopping potential, work function, threshold frequency, wavelength)
Work function
Narendra Kumar
1 0
8
A boat can travel with a speed of 13 km/hr in still water. If the speed of the stream is 4 km/hr, find the time taken by the boat to go 68 km downstream. A. 2 hours B. 3 hours C. 4 hours D. 5 hours
Speed downstream = (13 + 4) km/hr = 17 km/hr. Time taken to travel 68 km downstream = 68 hrs = 4 hrs. 17
Srikanth
0 0
8

Now ask question in any of the 1000+ Categories, and get Answers from Tutors and Trainers on UrbanPro.com

Ask a Question

Related Lessons

Exam preparation tip1
Three fundamental areas need to be excelled for success in exams. 1. Concept: This is very important to understand and what are its applications. Develp interest in this topic. 2. Attempt to solve problems...
K

Kalaam Sir

0 0
0
Balancing Reactions - Oxidation Method
Oxidation method is used very easy by identifying the oxidation states. Step1- Write the chemical equation and above them write the oxidation no.of the respective metal (of the species reduced/oxidized).

Nidhi T.

0 0
0
To Get Success
ONLY TRY TO BECOME A MAN OF VALUES.....

Ashish Sahu

0 0
0
Forms/Types of Utility-HSC/Class 12,Class 11,Economics,Micro-Economics
Different forms/types of Utility

Rajiv Vadera

1 0
0
KEY TO SUCCESS
Positive thinking make your energy and your environment positive.Sometimes we are facing many problems simultaneously and some problems which are unexpected, we should be calm and try to solve them by...
M

Mohit S.

2 0
0

Recommended Articles

Meet Sandhya R, a B.Sc tutor from Bangalore

Sandhya is a proactive educationalist. She conducts classes for CBSE, PUC, ICSE, I.B. and IGCSE. Having a 6-year experience in teaching, she connects with her students and provides tutoring as per their understanding. She mentors her students personally and strives them to achieve their goals with ease. Being an enthusiastic...

Read full article >

Meet Mohammad Wazid, a skilled trainer for...

Mohammad Wazid is a certified professional tutor for class 11 students. He has 6 years of teaching experience which he couples with an energetic attitude and a vision of making any subject easy for the students. Over the years he has developed skills with a capability of understanding the requirements of the students. This...

Read full article >

Meet Urmila, an MBBS tutor from Bangalore

Urmila is a passionate teacher with over 8 years of experience in teaching. She is currently pursuing her Ph. D. She provides classes for Class 11, Class 12, MBBS and Medical tuition.  Urmila began her career in teaching long before she became a teacher. She used to provide classes for foreign national students in her college...

Read full article >

Meet Radhe Shyam Burman, an MBA Tutor from...

Radhe Shyam is a highly skilled accounts and finance trainer with 8 years of experience in teaching. Accounting is challenging for many students and that’s where Radhe Shyam’s expertise comes into play. He helps his students not only in understanding the subject but also advises them on how to overcome the fear of accounts...

Read full article >

Find Class XII Tuition near you
Class XII Tuition in Delhi
Class XII Tuition in Bangalore
Class XII Tuition in Chennai
Class XII Tuition in Hyderabad
Class XII Tuition in Kolkata
Class XII Tuition in Mumbai
Class XII Tuition in Pune
Class XII Tuition in Lucknow
Class XII Tuition in Noida
Class XII Tuition in Gurgaon
Online Tuition Class 12

Looking for Class 12 Tuition ?

Learn from the Best Tutors on UrbanPro

Are you a Tutor or Training Institute?

Join UrbanPro Today to find students near you