Compare the power used in the 2 ohm resistor in each of the following circuits: a)a 6V battery in series with 1ohm and 2ohm resistors,and b? a 4V battery in parallel with 12ohm and 2ohm. resistors. with explaination....pls
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1. V= 6V
Here equivalent resistance is 1+2=3Ω
As V=IR
therfore, I=2A
therefore power=I²R=>4×3=12W
2. V=4V
12 Ω and 2 Ω resistors are connected in parallel. The voltage across each component of a parallel circuit remains the same. Hence, the voltage across 2 Ω resistor will be 4 V. Power consumed by 2 Ω resistor is given by
P=V²/R=> 16/2=> 8Ω
Here equivalent resistance is 1+2=3Ω
As V=IR
therfore, I=2A
therefore power=I²R=>4×3=12W
2. V=4V
12 Ω and 2 Ω resistors are connected in parallel. The voltage across each component of a parallel circuit remains the same. Hence, the voltage across 2 Ω resistor will be 4 V. Power consumed by 2 Ω resistor is given by
P=V²/R=> 16/2=> 8Ω
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