batoulmohammedgiath batoulmohammedgiath

27-04-2021
Physics

contestada

How much energy is supplied to a 9 V bulb if it is switched on for 3 minutes and takes a current of
0.2 A ?

Respuesta :

obedfeni23 obedfeni23

27-04-2021

Answer:

0.01j

Explanation:

the energy equals the work done by the bulb.

Workdone=

[tex]workdone = \frac{power}{time} [/tex]

power=voltage×current

=9×0.2

=1.8 W.

THEREFORE,

time=3×60

= 180s

workdone=1.8/180

=0.01 j

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