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Grade 12Electric Current

please help me with question no f8 explain it in detail

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Profile image of Pushkar Kumar
7 Years agoGrade 12
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1 Answer

Profile image of Arun
7 Years ago
Dear Pushkar
 
I am getting my answer as V = 0.4 Volts
 
 Let the voltmeter reading when, the voltage is 0 be X. l base 1R/ l base 2R = V base 1/V base 2 ⇒ 1.75/2.75 = 14.4 – V/22.4 – V ⇒ 0.35/0.55 = 14.4 – V/22.4 – V ⇒ 0.07/0.11 = 14.4 – V/22.4 – V ⇒ 7/11 = 14.4 – V/22.4 – V ⇒ 7(22.4 - V) = 11(14.4 - V) ⇒ 156.8 – 7V = 158.4 – 11V ⇒(7 - 11)V = 156.8 – 158.4 ⇒ -4V = - 1.6 ⇒ V = 0.4 V.
 
Hope it helps
 
Regards
Arun (askIITians forum expert)