26grimesj 26grimesj

21-04-2021
Engineering

contestada

i need help with this question ill give Brainliest The device is connected to 230V and draws 3.5A current. Power consumption is 1932kJ. How many minutes has this device been in operation?

Respuesta :

mariammashhour50 mariammashhour50

22-04-2021

Answer:

U=230 V

I=3.5 A

W=1932 kJ→ J=1932⋅ 1000 J=1932000 J

P=U⋅ I=230⋅ 3.5=805 W

W=Pt

t

1

=W/P=1932000/805=2400 s

t=t

1

→ min=t

1

/60 min=2400/60

min=40 min

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