Perhatikan gambar berikut! Besar gaya listrik pada muatan -2 C adalah.... (k = 9 N)

Pertanyaan

Perhatikan gambar berikut!

Besar gaya listrik pada muatan -2 $begin mathsize 14px style cross times end style$ $begin mathsize 14px style 10 to the power of negative 7 end exponent end style$ C adalah.... (k = 9 $begin mathsize 14px style cross times 10 to the power of 9 end style$ N $begin mathsize 14px style straight m squared straight C to the power of negative 2 end exponent end style$ ) $undefined$

.... $undefined$
.... $undefined$

Pembahasan Video:

Pembahasan Soal:

Diketahui:

$begin mathsize 14px style q subscript 1 equals q subscript 3 equals 2 cross times 10 to the power of negative 7 end exponent space straight C q subscript 2 equals negative 2 cross times 10 to the power of negative 7 end exponent space straight C k equals 9 cross times 10 to the power of 9 space Nm squared straight C to the power of negative 2 end exponent end style$

Ditanya: $begin mathsize 14px style F subscript 2 end style$ ?

Penyelesaian:

$begin mathsize 14px style F subscript 21 equals k fraction numerator q subscript 2 q subscript 1 over denominator left parenthesis r subscript 21 right parenthesis squared end fraction F subscript 21 equals 9 cross times 10 to the power of 9 fraction numerator left parenthesis 2 cross times 10 to the power of negative 7 end exponent right parenthesis left parenthesis 2 cross times 10 to the power of negative 7 end exponent right parenthesis over denominator left parenthesis 3 cross times 10 to the power of negative 2 end exponent right parenthesis squared end fraction F subscript 21 equals 0 comma 4 space straight N F subscript 23 equals F subscript 21 F subscript 23 equals 0 comma 4 space straight N F subscript 2 equals square root of open parentheses F subscript 21 close parentheses squared plus open parentheses F subscript 23 close parentheses squared end root F subscript 2 equals square root of open parentheses 0 comma 4 close parentheses squared plus open parentheses 0 comma 4 close parentheses squared end root F subscript 2 equals square root of 0 comma 32 end root F subscript 2 equals 0 comma 56 space straight N end style$

Jadi, besar gaya listrik pada muatan -2 $begin mathsize 14px style cross times end style$ $begin mathsize 14px style 10 to the power of negative 7 end exponent end style$ C adalah 0,56 N. $space$

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Terakhir diupdate 30 Agustus 2021

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Diketahui :

$begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row cell q subscript 1 end cell equals cell q subscript 2 equals 0 comma 06 space μC equals 6 cross times 10 to the power of negative 8 end exponent space straight C end cell row r equals cell 8 space cm equals 8 cross times 10 to the power of negative 2 end exponent space straight m end cell end table end style$

Ditanya :

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Jawab :

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$begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row F equals cell fraction numerator k q subscript 1 q subscript 2 over denominator r squared end fraction end cell row F equals cell fraction numerator 9 cross times 10 to the power of 9 cross times 6 cross times 10 to the power of negative 8 end exponent cross times 6 cross times 10 to the power of negative 8 end exponent over denominator open parentheses 8 cross times 10 to the power of negative 2 end exponent close parentheses squared end fraction end cell row F equals cell 5 comma 06 cross times 10 to the power of negative 3 end exponent space straight N end cell end table end style$

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Ditanya
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Penyelesaian
$begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row F equals cell fraction numerator k Q subscript 1 Q subscript 2 over denominator r squared end fraction end cell row 90 equals cell fraction numerator 9 cross times 10 to the power of 9 Q squared over denominator open parentheses 3 cross times 10 to the power of negative 2 end exponent close parentheses squared end fraction end cell row 90 equals cell fraction numerator 9 cross times 10 to the power of 9 Q squared over denominator 9 cross times 10 to the power of negative 4 end exponent end fraction end cell row cell 9 cross times 10 to the power of negative 3 end exponent end cell equals cell 10 to the power of 9 Q squared end cell row cell Q squared end cell equals cell fraction numerator 9 cross times 10 to the power of negative 3 end exponent over denominator 10 to the power of 9 end fraction end cell row blank equals cell 9 cross times 10 to the power of negative 12 end exponent end cell row Q equals cell square root of 9 cross times 10 to the power of negative 12 end exponent end root end cell row blank equals cell 3 cross times 10 to the power of negative 6 end exponent space text C end text end cell end table end style$

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$F subscript 1 over F subscript 2 equals fraction numerator k begin display style fraction numerator Q cross times 2 Q over denominator r subscript 1 squared end fraction end style over denominator k begin display style fraction numerator Q cross times 2 Q over denominator r subscript 2 squared end fraction end style end fraction F over X equals fraction numerator begin display style 1 over r squared end style over denominator begin display style 1 over open parentheses 2 r close parentheses squared end style end fraction F over X equals fraction numerator 4 r squared over denominator r squared end fraction F over X equals 4 over 1 X equals 1 fourth F$

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