Take Class 12 Tuition from the Best Tutors

• Affordable fees
• 1-1 or Group class
• Flexible Timings
• Verified Tutors

Search in

# 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.

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.

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.

B

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

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

b

Power To Teach

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

PHYSICS MENTOR

3.33ms

Physics Projectile

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

Book free demo class at Mastermath.in

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

B) 3.33 ms

Related Questions

26/10/2018
141

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

Related Lessons

Integration of sin x from first principles
y' = Lt / x x => 0 Therefore if y = sin x y' = Lt / x x=>0 y' = Lt / x x => 0 =>Lt / x x => 0 => Lt / x x => 0s =>sin x Lt(cos...
P

Pramod . | 18/10/2021

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

Ashish Sahu | 21/10/2020

Basic Accounting Procedures – II Journal
I. Journalise the following Transactions – Chapter 4 (Book Examples) Jan 1, 2004 – Saravanan started the business with Rs. 1,00,000. Jan 3, 2004 – Received cash from Balan Rs. 25,000 Feb...

Alex J | 04/08/2020

Find Grade 12 Tuition near you

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
X

### Looking for Class 12 Tuition Classes?

The best tutors for Class 12 Tuition Classes are on UrbanPro

• Select the best Tutor
• Book & Attend a Free Demo
• Pay and start Learning

### Take Class 12 Tuition with the Best Tutors

The best Tutors for Class 12 Tuition Classes are on UrbanPro

UrbanPro.com is India's largest network of most trusted tutors and institutes. Over 55 lakh students rely on UrbanPro.com, to fulfill their learning requirements across 1,000+ categories. Using UrbanPro.com, parents, and students can compare multiple Tutors and Institutes and choose the one that best suits their requirements. More than 7.5 lakh verified Tutors and Institutes are helping millions of students every day and growing their tutoring business on UrbanPro.com. Whether you are looking for a tutor to learn mathematics, a German language trainer to brush up your German language skills or an institute to upgrade your IT skills, we have got the best selection of Tutors and Training Institutes for you. Read more