A point pole has a strength of 4? × 10-4 weber. The force in newtons on a point pole of 4? × 1.5 × 10-4 weber placed at a distance of 10 cm from it will be a.) 20 N. b.) 15 N. c.) 7.5 N. d.) 3.75 N.

Asked by Last Modified  

Follow 2
Answer

Please enter your answer

Trainer

Solution: m1 = 4N × 10^-7, m2 = 4N × 1.5 × 10^-4; r = 10 cm. F= (m1 m2)/( 4 pi mue0 r^2) = (4N 10^-7 x 4N 10^^-4)/(4N x 4N x 10^-7(10 x10^-2)^2 =15N
1 Comments

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

A
Comments

A software engineer with more that 12 years of experience and 5 years of teaching experience

I am assuming that the 4? actually means 4? . If so the correct answer is b.) 15N. using F =m1m2/4?µ0r^2 we get 14.99N
Comments

Tutor

Kindly re-post the question without question mark symbol.
Comments

b
Comments

Kindly re-post the question without question mark symbol.
Comments

View 4 more Answers

Related Questions

what is relative velocity ?
Relative velocity is the difference in velocities of two objects moving with respect to each other .
Sandeep Kumar
Does the point ( -3.5,4.5 ) lies inside , outside or on the circle x2+y2 = 49
It is inside the circle, because (-3.5)2+(4.5)2 is less than 49. that means if you put the point on the left hand side of given equation, and the value becomes less than the right hand side, then the point is inside.
Kumar Upendra Akshay
How one can give cash payment to UrbanPro for collecting UrbanPro coins
You can pay them through bank A/c and they will credit it to your account manually.
Abdhesh

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

Ask a Question

Related Lessons

Mean value theorem in Calculus
Mean value theorem in simple terms: 1. If a real valued function f(x) is continuous over an closed interval 2. And this function is differentiable over an open interval (a,b) 3. f(a) ≠ f(b) : (...

Preparation tips for NEET-UG examination
There is no doubt about the fact that the NEET-UG examination is a tough one. The following tips will help deal with stress and perform better: Know the syllabus of the examination well: The very first...
B

Bidisha Ghosh

0 0
0

Superposition Principle Of Forces: Physics
Here I am going to explain superposition principle of forces with an heuristic approach. Let us do a simple experiment. See the above image. Suppose an object of heavy mass is pulled up by a person...
M

Muthumanimaran

0 0
0

Eighth Continent? A Question In Search Of Answer!
How many continents are there? Standard answer: Seven. What are they? Asia, Europe, Africa, North America, South America, Australia, Antartica But it seems, a new member may be...

What Is Biology?
Biology is a branch of science,where are study about all living organisms on earth. Biology term given by 'Aristotle'. It is mainly devided into two branch: 1. Zoology (given by Aristotle) : Zoology is...

Recommended Articles

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 >

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 >

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 >

Raghunandan is a passionate teacher with a decade of teaching experience. Being a skilled trainer with extensive knowledge, he provides high-quality BTech, Class 10 and Class 12 tuition classes. His methods of teaching with real-time examples makes difficult topics simple to understand. He explains every concept in-detail...

Read full article >

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