Question

two resistors of resistance 'R' each are connected in series and then in parallel with the same source for time 't' what is the ratio of the power consumed in two cases?
A) 4:1
B) 1:4
C) 2:1
D) none of these

please help me ❣️❣️​

Answer 1

Answer:

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Answer 2

Given :

Time = t

Two resistors of resistance ' R ' are connected in series and then in parallel .

To find :

The ratio of the power consumed in two cases .

Solution :

Power , P = ( Voltage * Voltage ) / Resistance

Let power be P$_s$ when resistors are in series and P$_p$ when resistors are in parallel .

Now ,

P$_s$ / P$_p$ = [ ( Voltage * Voltage )  * ( R / 2 )] / [ ( 2R ) * ( Voltage * Voltage )]

=> P$_s$ / P$_p$ = 1 / 4

The ratio of the power consumed in two cases is 1 : 4 .