Question

7. The resistivity of two wires is p, and P2 which are connected in series. If
there dimensions are same then the equivalent resistivity of the combination
will be
(a) (P+p, V
,) W
(b)
1
+
P, P2
(c)
PitP₂
- 2
(d) A
P2​

Answer 1

Answer:

(p+p2)/2

Explanation:

p'×2l/a= p×l/a + p2×l/a

p' = p+p2