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An object in free fall covers a distance of 80 meters in 4 seconds. What is its average speed?
Which instrument is used to measure electric current?
A. Ammeter
B. Voltmeter
C. Wattmeter
D. Barometer
Answer: Ammeter
Subjects: Physical Quantities and Measurement, Physics
The resistance to deformation is measured by:
A. Young's Modulus
B. Poisson's Ratio
C. Shear Modulus
D. Bulk Modulus
Answer: Young's Modulus
Subjects: Physical Quantities and Measurement, Physics
The ‘Dirac Equation’ is fundamental to:
A. Describing relativistic spin-1/2 particles
B. Classical mechanics
C. Electrodynamics
D. General relativity
Answer: Describing relativistic spin-1/2 particles
Subjects: Modern Physics, Physics
The mutual inductance between two coils is a measure of:
A. The ability of one coil to induce EMF in another
B. The resistance of the coils
C. The magnetic field strength
D. The energy stored in the coils
Answer: The ability of one coil to induce EMF in another
Subjects: Magnetism and Electromagnetic Induction, Physics
The phenomenon of electromagnetic induction is utilized in:
A. Electric generators
B. Induction motors
C. Transformers
D. All of the above
Answer: All of the above
Subjects: Magnetism and Electromagnetic Induction, Physics
In a circuit, if the voltage is constant and the resistance is doubled, the current:
A. Halves
B. Doubles
C. Remains the same
D. Quadruples
Answer: Halves
Subjects: Current Electricity, Physics
The energy stored in a capacitor is:
A. Proportional to the square of the voltage
B. Proportional to the charge
C. Inversely proportional to the capacitance
D. Inversely proportional to the voltage
Answer: Proportional to the square of the voltage
Subjects: Current Electricity, Physics, Electrostatics, Physics
The electric field at a point on the axis of a dipole is proportional to:
A. The inverse cube of the distance from the dipole
B. The inverse square of the distance from the dipole
C. The distance from the dipole
D. The square of the distance from the dipole
Answer: The inverse cube of the distance from the dipole
Subjects: Electrostatics, Physics