# A torch bulb is rated 2.5 V and 7.5 mA .calculate its power

2
by swathuu

• Brainly User
2014-07-15T20:00:26+05:30

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Power is the product of voltage and current.
voltage is 2.5 V
current is 7.5*10⁻³ ampere
multiplying both
We get 18.75 *10⁻³ watts
you can also wrote this as 18.75 milli watts
*write this as...not wrote this as..!
2014-07-17T16:58:24+05:30

### This Is a Certified Answer

Certified answers contain reliable, trustworthy information vouched for by a hand-picked team of experts. Brainly has millions of high quality answers, all of them carefully moderated by our most trusted community members, but certified answers are the finest of the finest.
Power = voltage x current
P = VI
voltage =2.5 V
current = 7.5 x 10⁻³ ampere
so P = 18.75 *10⁻³ watts