Compare the power used in the 2 ohm resistor in the following circuits: (i) A 2 ohm resistors, and (ii)A 4v battery in parallel with 12 ohm and 2 ohm resistors.
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(ii) P.D, V = 4 V12 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 ohm resistor will be 4 V. Power consumed by 2 Ω resistor is given by
P= V sq. / R
= 4 sq./ 2
= 8 watt
P= V sq. / R
= 4 sq./ 2
= 8 watt
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