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Perhatikan gambar kawat yang dialiri arus berikut! Besar induksi magnetik di titik P adalah ...( )

Perhatikan gambar kawat yang dialiri arus berikut! 

Besar induksi magnetik di titik P adalah ...( Error converting from MathML to accessible text.)

  1. 0 comma 5 straight pi.10 to the power of negative 5 end exponent Wb. straight m to the power of negative 2 end exponent

  2. straight pi.10 to the power of negative 5 end exponent Wb. straight m to the power of negative 2 end exponent

  3. 1 comma 5 straight pi.10 to the power of negative 5 end exponent Wb. straight m to the power of negative 2 end exponent

  4. 2 comma 0 straight pi.10 to the power of negative 5 end exponent Wb. straight m to the power of negative 2 end exponent

  5. 3 comma 0 straight pi.10 to the power of negative 5 end exponent Wb. straight m to the power of negative 2 end exponent

Jawaban:

straight a equals 2 cm equals 2 straight x 10 to the power of negative 2 end exponent straight m

Kawat space di space atas space dilengkungkan space hingga space membentuk space setengah space lingkaran. space Maka space besarnya space induksi space magnetik space di space titik space straight P space adalah space colon    straight B equals 1 fourth straight x fraction numerator straight mu subscript 0 straight I over denominator 2 straight a end fraction  straight B equals 1 fourth straight x fraction numerator left parenthesis 4 straight pi space straight x space 10 to the power of negative 7 end exponent right parenthesis space left parenthesis 2 right parenthesis over denominator left parenthesis 2 right parenthesis space left parenthesis 2 space straight x space 10 to the power of negative 2 end exponent right parenthesis end fraction  straight B space equals space 0 comma 5 straight pi space straight x space 10 to the power of negative 5 end exponent space straight T

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