Total resistance = 100 Ω + 50 Ω = 150 Ω. Current = 1.5 V / 150 Ω = 0.01 A = 10,000 µA. For 20 divisions, current per division = 10,000 µA / 20 = 500 µA/div. Answer: (C) ...
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The correct answer is (A) E = 0, B = 0. Since the proton moves with constant velocity without changing direction or speed, no net force acts on it. Hence, both electric and magnetic fields must be zero to maintain ...
The series resistance R to convert the galvanometer to a voltmeter is given by: R = V/Ig – Rg Substituting V = 15, Ig = 30 × 0.005 A. Rg = 20 Ω: R = 15/0.15 – 20 = ...
The voltage sensitivity of a galvanometer is given by: Voltage Sensitivity = Current Sensitivity/R If current sensitivity increases by 35% and resistance increases by a factor of 3, voltage sensitivity changes by: Change = 1.35/3 = 0.45 or 45% Answer: (B) 45%
To convert the galvanometer to a voltmeter of range 0–10 V, the series resistance R is given by: R = V/I – Rg Substituting V = 10V, I = 5 mA and Rg = 15 Ω: R = 10/0.005 – ...