MDCAT Preparation MCQs

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Showing 1,314 MCQs in MDCAT
Physics
A. Conservation of energy
B. Conservation of mass
C. Conservation of momentum
D. Conservation of charge
Answer: Sum of currents at a junction is zero, based on charge conservation.
Physics
A. Tesla
B. Weber
C. Gauss
D. Henry
Answer: Magnetic flux is measured in Weber (Wb).
Physics
A. Ampere
B. Watt
C. Volt
D. Ohm
Answer: EMF is measured in Volts.
Physics
A. Different
B. Infinite
C. Zero
D. Same
Answer: Same current flows through all components in series.
Physics
A. High R in series
B. Low R in series
C. High R in parallel
D. Low R in parallel
Answer: Low resistance shunt in parallel bypasses excess current.
Physics
A. Non-uniform
B. Zero
C. Uniform
D. Random
Answer: Inside a long solenoid, field is uniform and axial.
Physics
A. Stationary charges
B. All particles
C. Neutral particles
D. Moving charges
Answer: Magnetic force F = qv x B acts only on moving charges.
Physics
A. Plate thickness
B. Current
C. Applied voltage
D. Plate area and separation
Answer: C = epsilon0 A/d depends on area and separation.
Physics
A. Watt
B. Ampere
C. Volt
D. Joule
Answer: Energy is measured in Joules.
Physics
A. 1 Wb/m
B. 1 Wb/m2
C. 1 Wb m
D. 1 Wb m2
Answer: 1 Tesla = 1 Weber per square meter.
Physics
A. P = V2/R
B. P = I2R
C. P = VI
D. All of these
Answer: All three are equivalent expressions for power.
Physics
A. Zero
B. Equal to external
C. Very low
D. Infinite
Answer: Ideal voltmeter has infinite resistance to draw no current.
Physics
A. Max force
B. Zero force
C. Min force
D. Variable force
Answer: F = qvB sin 0 = 0 when parallel.
Physics
A. 10 V
B. 2.5 V
C. 0.4 V
D. 7 V
Answer: V = IR = 2 x 5 = 10 V.
Physics
A. Parallel to field
B. Perpendicular to field
C. At 45 degrees
D. Current is zero
Answer: F = BIL sin theta, maximum at 90 degrees.
Physics
A. Cross-sectional area
B. Voltage
C. Current
D. Length
Answer: R = rho L/A, directly proportional to length.
Physics
A. 8 ohm
B. 1 ohm
C. 4 ohm
D. 2 ohm
Answer: Req = R/n = 4/2 = 2 ohm for equal resistors in parallel.
Physics
A. Coil moves in uniform field
B. Field strength changes
C. Coil at rest in uniform field
D. Field and coil stationary
Answer: Flux changes when field, area, or angle changes.
Physics
A. Right hand thumb rule
B. Left hand rule
C. Coulomb\'s law
D. Lenz\'s law
Answer: Right hand thumb rule gives the field direction.
Physics
A. Volt
B. Watt
C. Ohm
D. Ampere
Answer: Ampere (A) is the SI unit of electric current.
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