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

A wire of given material having lenght L and area of cross- section A has a resistance 4ohm. What would be the resistance of anthor wire of same material having lenght l/2 land area of cross section 2A?

A wire of given material having lenght L and area of cross- section A has a resistance 4ohm. What would be the resistance of anthor wire of same material having lenght l/2 land area of cross section 2A?

Grade:Select Grade

1 Answers

IHate Ppts
101 Points
4 years ago
We know that the resistance is P(rho) l/a. We can ignore P over here because the material is same in both cases. Now, R=l/a. 4=l/a. In the second case, they are asking resistance if the area is double and length is halved. So, R=l/2 whole divided by 2a.We get R=l/4a. But we l/a=4. So, 4/4=1 and so the answer is 1 ohm.

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