Question

14.
✓
Two resistors of 10ohm and 20ohm are connected in series acorss a12V battery. Calculate the power consumed by each of themrespectively.
(1.6W;3.2W​

Answer 1

Answer:

Current by the battery

$i = \frac{v}{r} = \frac{12}{10 + 20} = \frac{12}{30} = 0.4 \: amp$

Power consumed by 10 ohm

$= 12 \times 0.4 = 4.8 \div 4 = 1.6$

Power consumed by 20 ohm

$= 12 \times 0.4 = 4.8 \div 2 = 3.2$