krazyapril4601
27.08.2020 •
Physics
Hag question
28. A eureka can of mass 100g and cross-sectional area 100cm² is filled with water of density
1g/cm A piece of metal of mass 20g and density 8g/cm is lowered carefully into the can as
shown.
100m
Calcul
a)
The total mass of water and Eureka can before the metal was lowered
(3n
Solved
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Ответ:
0.4 A
Explanation:
From the question,
Electric power = Voltage×current
P = VI Equation 1
Make I the subject of the equation
I = P/V Equation 2
Given: P = 96 J/s, V = 230 V.
Substitute into equation 2
I = 96/230
I = 0.4 A.
Hence the current is 0.4 A