Pertanyaan

Sebuah voltmeter V dirangkai seperti yang terdapat pada gambar. Jika saklar S ditutup, yang akan terjadi adalah......

Tidak ada perubahan tegangan yang terbaca pada voltmeter
Voltmeter tidak dilalui arus
Arus pada voltmeter mengecil
Tegangan yang terbaca pada voltmeter berkurang
Hubungan singkat pada voltmeter

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$H u b u n g a n space t e g a n g a n space p a d a space r a n g k a i a n. V subscript S equals V subscript 2 plus V subscript 1 plus V subscript 2 V subscript S equals V subscript 1 plus 2 V subscript 2 S u s u n a n space h a m b a tan space p a d a space r a n g k a i a n. R subscript t o t a l end subscript equals R subscript 2 plus R subscript 1 plus R subscript 2 R subscript t o t a l end subscript equals R subscript 1 plus 2 R subscript 2 M a k a colon I equals V subscript S over R subscript t o t a l end subscript equals fraction numerator V subscript 1 plus 2 V subscript 2 over denominator R subscript 1 plus 2 R subscript 2 end fraction D e n g a n space colon V subscript 1 equals I R subscript 1 V subscript 2 equals I R subscript 2 K e t i k a space s a k l a r space d i h u b u n g k a n comma space p e r h a t i k a n space g a m b a r space b e r i k u t.$

$1 over R subscript p equals 1 over R subscript 1 plus 1 over R subscript 1 equals 2 over R subscript 1 R subscript p equals 1 half R subscript 1 S e h i n g g a space colon R subscript t o t a l end subscript superscript apostrophe equals R subscript 2 plus R subscript p plus R subscript 2 equals 2 R subscript 2 plus 1 half R subscript 1 J a d i space colon R subscript t o t a l end subscript superscript apostrophe less than R subscript t o t a l end subscript O l e h space k a r e n a space i t u space colon I to the power of apostrophe equals fraction numerator V subscript S over denominator R subscript t o t a l end subscript superscript apostrophe end fraction I to the power of apostrophe greater than I D e n g a n space colon V subscript 2 superscript apostrophe equals I subscript 2 superscript apostrophe R subscript 2 V subscript 2 superscript apostrophe greater than V subscript 2 K a r e n a space V S space t e t a p comma space m a k a space V 1 ’ space less than space V 1. H a l space i n i space m e n y e b a b k a n space t e g a n g a n space y a n g space t e r b a c a space p a d a space v o l t m e t e r space m e n j a d i space b e r k u r a n g space left parenthesis m e n g e c i l right parenthesis.$