Thank you for registering.

One of our academic counsellors will contact you within 1 working day.

Please check your email for login details.
MY CART (5)

Use Coupon: CART20 and get 20% off on all online Study Material

ITEM
DETAILS
MRP
DISCOUNT
FINAL PRICE
Total Price: Rs.

There are no items in this cart.
Continue Shopping

Question no . 51 .If a copper wire is stretched to make its radius decrease by .1% then the percentage increase in its resistance is approximately ????1. .1%2. .2%3. .4%4. .8%

Question no . 51 .If a copper wire is stretched to make its radius decrease by .1% then the percentage increase in its resistance is approximately ????1. .1%2. .2%3. .4%4. .8%

Grade:12th pass

1 Answers

Deepak kumar
19 Points
3 years ago
Here volume remains constant so,resistance become inversely proportional to area.as area is proportional to r square.by applying %changes,we get that change in 1% in radius changes resistance about 4% but inversely proportional to each other

Think You Can Provide A Better Answer ?

Provide a better Answer & Earn Cool Goodies See our forum point policy

ASK QUESTION

Get your questions answered by the expert for free