× Didn't find what you were looking for? Ask a question
Top Posters
Since Sunday
j
4
m
4
n
3
m
3
R
3
V
3
e
3
w
3
j
3
a
3
a
3
h
3
Home Q & A Board Science-Related Homework Help Physics
New Topic  
ppk ppk
wrote...
Valued Member
On Hiatus
Posts: 3560
Rep: 58 2
12 years ago
The primary coil of a transformer has 100 turns and its secondary coil has 400 turns. If the ac current in the secondary coil is 2 A, what is the current in its primary coil?
A) 2 A
B) 8 A
C) 1/2 A
D) 1/4 A
E) 4 A
Read 4952 times
5 Replies

Related Topics

Replies
wrote...
#1
Staff Member
12 years ago
B
- Master of Science in Biology
- Bachelor of Science
wrote...
#2
12 years ago
to transmit electric power long distance, high voltage is used, the generator produces power at 1000 V and it needs to be transported at 2,000,000 V. would a ste-up or step-down transformer be needed?
wrote...
#3
Staff Member
12 years ago
Quote from: transformers (12 years ago)
ste-up
- Master of Science in Biology
- Bachelor of Science
wrote...
#4
12 years ago
 YOU WISH TO MAKE A TRANSFORMER THAT WILL TURN A NORMAL 120 V OUTLET VOLTAGE INTO 20 V. WHICH WILL HAVE MORE TURNS, THE PRIMARY OR THE SECONDARY?
wrote...
#5
Valued Member
12 years ago
Quote from: TRANSFORMERS (12 years ago)
YOU WISH TO MAKE A TRANSFORMER THAT WILL TURN A NORMAL 120 V OUTLET VOLTAGE INTO 20 V. WHICH WILL HAVE MORE TURNS, THE PRIMARY OR THE SECONDARY?

Vs/Vp = Ns/Np
you are talking about a step down transformer here.
obviously secondary will have fewer turns.
also start a new topic when posting a new question
I don't feel like riding until everything blurs.

Ask Me Maths Questions
New Topic      
Quick Reply
Explore
Post your homework questions and get free online help from our incredible volunteers
  1091 People Browsing
Start New Topic Take the Tour CoursesNew Study Tools Topics Trending Browse by Textbook
Live Chat
Related Images
  
 257
  
 310
  
 7414
Your Opinion
How often do you eat-out per week?
Votes: 81
Previous poll results: Who will win the 2024 president election?