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

on increasing temperature `R` will decrease for 1) gold 2) platinum 3) carbon 4) water

on increasing temperature `R` will decrease for 1) gold 2) platinum 3) carbon 4) water

Grade:12

2 Answers

Vikas TU
14149 Points
5 years ago
it would depend upon coeff. of resistivity for each metal element.
And as temperature increases the resiatnce would also rise according to the relaton.
Rf =Ri (1+ a(T2 – T1)).
where a is the coeff. of thermal expansion.
 
Bejoi Mathew
106 Points
5 years ago
THE ANSWER IS (3) CARBON
CARBON BEING A SEMICONDUCTOR HAS GOT NEGATIVE COEFFICIENT OF RESISTANCE.
THIS IS BECAUSE THE NUMBER OF BONDS BROKEN AS TEMPERTURE INCREASES IS MORE HENCE INCREASING THE CONDUCTANCE AND REDUCING THE RESISTANCE.
THANK YOU
BEST OF LUCK!

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