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An object travels 60 meters in the first 4 seconds and 80 meters in the next 6 seconds. What is its average speed?
Which unit is used to measure electrical resistance?
A. Ohm
B. Farad
C. Henry
D. Coulomb
Answer: Ohm
Subjects: Physical Quantities and Measurement, Physics
The ‘Maxwell’s Equations’ describe:
A. The behavior of electric and magnetic fields
B. The motion of planets
C. The quantization of energy levels
D. The curvature of spacetime
Answer: The behavior of electric and magnetic fields
Subjects: Modern Physics, Physics
The ‘Einstein-Podolsky-Rosen (EPR) Paradox’ addresses the issue of:
A. Quantum entanglement and locality
B. Quantum superposition and measurement
C. Wave-particle duality
D. Uncertainty principle
Answer: Quantum entanglement and locality
Subjects: Modern Physics, Physics
The phenomenon of magnetic hysteresis is observed in:
A. Ferromagnetic materials
B. Diamagnetic materials
C. Paramagnetic materials
D. Superconductors
Answer: Ferromagnetic materials
Subjects: Magnetism and Electromagnetic Induction, Physics
The inductance of a coil is affected by:
A. The number of turns and the core material
B. The length of the coil
C. The diameter of the coil
D. The temperature
Answer: The number of turns and the core material
Subjects: Magnetism and Electromagnetic Induction, Physics
The induced EMF in a coil due to a changing magnetic field is given by:
A. ε = -dΦ/dt
B. ε = B × A
C. ε = I × R
D. ε = V × t
Answer: ε = -dΦ/dt
Subjects: Magnetism and Electromagnetic Induction, Physics
The phenomenon where an alternating magnetic field induces an electromotive force in a nearby coil is known as:
A. Electromagnetic induction
B. Magnetic resonance
C. Faraday's effect
D. Lorentz force
Answer: Electromagnetic induction
Subjects: Magnetism and Electromagnetic Induction, Physics
The total energy supplied to a circuit is equal to:
A. The sum of the energy dissipated in all components
B. The difference between the voltage and current
C. The product of the resistance and power
D. The product of current and time
Answer: The sum of the energy dissipated in all components
Subjects: Current Electricity, Physics