For balance, p/Q = R/Seq . Given S = 3Ω, let shunt resistance be x. Using Seq = 3x/3+x = 2Ω. solving gives x = 2Ω. Answer: (b) 2Ω. Class 12th Science Physics NCERT MCQ Questions NCERT Books MCQ Questions ...
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In a potentiometer, emf ∝ balancing length. Given v/1.5V = U3/Lx , solving for Lx gives Lx = L/3. Answer: (c) l/3. Class 12th Science Physics NCERT MCQ Questions NCERT Books MCQ Questions Session 2024-2025.
In a meter bridge, the balancing condition is R / S = L / (100 – L). Given R = 2 Ω and L = 40 cm, we get 2 / S = 40 / 60. Solving for S, S ...
The resistance of the bulb is R = 220/100 = 484Ω. When operated at 110V, power consumed is P ′ = 110²/484 = 25W. Correct answer: (a) 25 W. Class 12th Science Physics NCERT MCQ Questions NCERT Books MCQ Questions ...
Current I is given by I = Q/t. Student A: Q = 300C. t = 60s, so I = 300/60 = 5A(correct). Student B: Q = (3.125 × 10¹⁹) × (1.6 × 10⁻¹⁹) = 5C, t = Is, so I ...