78 Two identical resistors each of resistance 10 ohm are connected (i) in series and then (ii) in parallel, in line to a battery of 6 volts. Calculate the ratio of power consumed in the combination of resistors in the cases.
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78 Two identical resistors each of resistance 10 ohm are connected (i) in series and then (ii) in parallel, in line to a battery of 6 volts. Calculate the ratio of power consumed in the combination of resistors in the cases.
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Answer:
P(series):P(parallel) = 1:4
Explanation:
i) Resistance in series =10+10 =20
Therefore, Power consumed =V²/R
=36/20
ii) Resistance in parallel = 10/2 = 5
Therefore,Power consumed =V²/R
=36/5
Now P(series)/P(parallel) = 36/20 x 5/36
= 1/4