Practice MDCAT Physics questions with answers and explanations.
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Equal parallel resistors have equivalent R/n.
6/3 = 2 Ω.
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Electrical power is P=VI.
P=240×5 = 1200 W.
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Energy is E=Pt.
E=100×60 = 6000 J.
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Use P=I²R.
P=3²×4 = 36 W.
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Capacitance is C=Q/V.
C=20 μC/10 V = 2 μF.
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Use Q=CV.
Q=5 μF×12 V = 60 μC.
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Magnetic force is F=qvB for perpendicular motion.
F=2×3×4 = 24 N.
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Force on a current-carrying wire is F=BIL.
F=3×4×0.5 = 6 N.
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Faraday's law gives emf=|ΔΦ/Δt| for one turn.
0.8/0.2 = 4 V.
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Ohm's law gives I=V/R.
I=12/4 = 3 A.
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Use V=IR.
V=2×15 = 30 V.
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Series resistances add directly.
R=3+7 = 10 Ω.
