rangkaian rlc seri dirangkai seperti gambar

by

Diketahui: 

R = 8Ω

L = 32 mH

C = 800 straight muF

VAC = 120 V

omega = 125 Rad/s

Ditanyakan : beda memiliki peluang antara titik M & N (VR) … ?

Jawab 

Untuk mencari VR, kita mampu menggunakan persamaan :

V subscript R equals space I space R, dimana I didapat dari I equals V subscript A C end subscript over Z

Mencari Arus (I)

table attributes columnalign right center left columnspacing 0px end attributes row cell X subscript L end cell equals cell omega L end cell row blank equals cell left parenthesis 125 right parenthesis left parenthesis 32 cross times 10 to the power of negative 3 end exponent right parenthesis end cell row blank equals cell 4 Ω end cell row blank blank blank row cell X subscript C end cell equals cell fraction numerator 1 over denominator omega C end fraction end cell row blank equals cell space fraction numerator 1 over denominator left parenthesis 125 right parenthesis left parenthesis 800 cross times 10 to the power of negative 6 end exponent right parenthesis end fraction end cell row blank equals cell fraction numerator 1 over denominator 0 comma 1 end fraction end cell row blank equals cell 10 Ω end cell row blank blank blank row Z equals cell square root of R squared plus open parentheses X subscript L minus X subscript C close parentheses squared end root end cell row blank equals cell square root of 8 squared plus open parentheses 4 minus 10 close parentheses squared end root end cell row blank equals cell square root of 8 squared plus left parenthesis negative 6 right parenthesis squared end root end cell row blank equals cell 10 space Ω end cell end table

Sehingga Arusnya yakni

I equals V subscript A C end subscript over Z equals 120 over 10 equals 12 straight A

Maka VR yaitu

table attributes columnalign right center left columnspacing 0px end attributes row cell V subscript R end cell equals cell space I space R end cell row blank equals cell left parenthesis 12 right parenthesis left parenthesis 8 right parenthesis end cell row blank equals cell 96 space straight V end cell end table

Oleh sebab itu, jawabannya ialah C. space

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