Question

Grade 10 physics grade 10 physics ncert

Answer 1

Answer:

0.1875 watt

Explanation:

first the total resistence must be taken into account

the total resistence = 3ohm+3ohm+3ohm+3ohm = 12ohm.

voltage =1.5

therefore the current drawn = 1.5/125A

we know that

current =power /voltage

power = current x voltage =0.125 x 1.5 =0.1875 watt

therefore the power that is dissipated = 0.1875

hence

option 2 0.187 watt