Question

Same length of two identical wires are first connected
in series and then in parallel. The amount of heat
produce in both the conditions are in the ratio of:
(1) 2:1
(2) 1 : 2 (AIIMS 2000
(4) 4:1
(3)1:4​

Answer 1

Answer:

(3)1:4​

Explanation:

Answer 2

Answer:

(3) 1:4

Explanation:

((c) Heat produced in the circuit is inversely proportional to the resistance R.

Let RS be the equivalent resistances of the wires if connected in series and RP be the equivalent resistances of the wires if connected in parallel

Then RS =R+R=2R

And 1/ RP = 1/R +1/R

1/ RP = 2/R

Or RP =R/2

Now the ratio of heat produced is given by

= 1/4