Question

Two identical resistors each of resistance 10 ohm are connected (i) series (ii) parallel in turn to a battery of 6 v, Calculate the ratio of power consumed in the combination of resistors in the two cases.

Answer 1

Answer:

for effective resistance when resistors are connected in series reff=r1+r2

Step-by-step explanation:

reff= (10+10)ohms

20ohms

effective resistance when connected in parallel=1/Reff = 1/r1 + 1/r2

1/10 +1/10= 2/10 =1/5

therefore

1/Reff = 1/5

reff =5ohms

ratio= 20/5 = 4/1

= 4:1