Physics MDCAT MCQs
Mechanics, electricity & modern physics MCQs
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Answer: Right hand thumb rule gives the field direction.
Answer: F = BIL sin theta, maximum at 90 degrees.
Answer: Low resistance shunt in parallel bypasses excess current.
Answer: 1 Tesla = 1 Weber per square meter.
Answer: C = epsilon0 A/d depends on area and separation.
Answer: L depends on number of turns, area, and length.
Answer: All three are equivalent expressions for power.
Answer: Ideal transformer has 100% efficiency.
Answer: Flux changes when field, area, or angle changes.
Answer: EMF = -dPhi/dt, the negative rate of flux change.
Answer: Transformers use mutual electromagnetic induction.
Answer: Magnetic force F = qv x B acts only on moving charges.
Answer: EMF is measured in Volts.
Answer: Lenz\'s Law states induced current opposes the change.
Answer: F = qvB sin 0 = 0 when parallel.
Answer: Inside a long solenoid, field is uniform and axial.
Answer: Ideal voltmeter has infinite resistance to draw no current.
Answer: Magnetic flux is measured in Weber (Wb).
Answer: Sum of currents at a junction is zero, based on charge conservation.
Answer: V = IR = 2 x 5 = 10 V.