Physics, asked by ram4842, 1 year ago

pls reply fast.its urgent

Attachments:

Answers

Answered by daredevil9
0

Answer:

R = ρ l/ A ... (1)

If l increases by 3 times then the changed resistance Rc is given as,

Rc = ρ(3 l)/ A

Thus, this can be written as,

Rc = 3(ρl/ A) ... (2)

From (1) and (2),

Rc = 3 R

Hence, resistance increases by 3 times with an increase in its length by 3 times.

Also, from the formula, it is clear that resistance is directly proportional to the length of the wire.

PLEASE MARK AS BRAINLIEST.....

Answered by saitejashwini465
0

R = ρ l/ A ... (1)

If l increases by 3 times then the changed resistance Rc is given as,

Rc = ρ(3 l)/ A

Thus, this can be written as,

Rc = 3(ρl/ A) ... (2)

From (1) and (2),

Rc = 3 R

Hence, resistance increases by 3 times with an increase in its length by 3 times.

Also,it is clear that resistance is directly proportional to the length of the wire.

Hope it helps u!!

Similar questions