Roboguru

Seberkas sinar laser hendak digunakan untuk memotong logam. Intensitas sinar yang dipakai adalah 109 W/m2. Hitung besar medan listrik efektif dan medan magnetik efektif dari berkas ini. (petunjuk:  dan )

Pertanyaan

Seberkas sinar laser hendak digunakan untuk memotong logam. Intensitas sinar yang dipakai adalah 109 W/m2. Hitung besar medan listrik efektif dan medan magnetik efektif dari berkas ini. (petunjuk: E subscript e f end subscript equals fraction numerator E subscript m over denominator square root of 2 end fraction dan B subscript e f end subscript equals fraction numerator E subscript m over denominator square root of 2 end fraction)

Pembahasan Soal:

Besar medan listrik efektif:

table attributes columnalign right center left columnspacing 0px end attributes row cell E subscript e f end subscript end cell equals cell fraction numerator E subscript m over denominator square root of 2 end fraction end cell row blank equals cell fraction numerator square root of 2 c mu subscript 0 I end root over denominator square root of 2 end fraction end cell row blank equals cell square root of 3 cross times 10 to the power of 8 cross times 4 cross times 3 comma 14 cross times 10 to the power of negative 7 end exponent cross times 10 to the power of 9 end root end cell row blank equals cell square root of 37 comma 68 cross times 10 to the power of 10 end root end cell row blank equals cell 6 comma 14 cross times 10 to the power of negative 5 end exponent space straight V divided by straight m end cell end table 

Besar medan magnetik efektif:

table attributes columnalign right center left columnspacing 0px end attributes row cell B subscript e f end subscript end cell equals cell fraction numerator B subscript m over denominator square root of 2 end fraction end cell row blank equals cell fraction numerator square root of begin display style fraction numerator 2 mu subscript 0 I over denominator c end fraction end style end root over denominator square root of 2 end fraction end cell row blank equals cell square root of fraction numerator 4 cross times 3 comma 14 cross times 10 to the power of negative 7 end exponent cross times 10 to the power of 9 over denominator 3 cross times 10 to the power of 8 end fraction end root end cell row blank equals cell square root of 4 comma 18 cross times 10 to the power of negative 6 end exponent end root end cell row blank equals cell 2 comma 04 cross times 10 blank to the power of negative 3 end exponent space straight T end cell end table    

Pembahasan terverifikasi oleh Roboguru

Terakhir diupdate 03 Juni 2021

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