- 1. Experiments and Observations on Electricity is a landmark work that profoundly shaped the understanding of electrical phenomena in the 18th century. In this seminal work, Benjamin Franklin meticulously detailed his extensive investigations into the nature of electricity, employing innovative methods and keen observational skills to explore the behavior of electric charges. Franklin's famous kite experiment, where he flew a kite during a thunderstorm to demonstrate the electrical nature of lightning, became a cornerstone of his research and a pivotal moment in the history of science. He introduced crucial concepts such as the distinction between positive and negative charges, the conservation of charge, and the theory of electric fluid, which laid the groundwork for future explorations in electromagnetism. Franklin's observations were not merely theoretical; he also engaged in practical applications, inventing devices like the lightning rod to protect buildings from electrical storms. His clear and eloquent prose made complex ideas accessible to a broad audience, fostering a greater public understanding of electricity. The work is significant not only for its scientific contributions but also for its influence on subsequent generations of scientists and inventors, inspiring further research and development in the field of electricity and revealing the profound impact of this mysterious force on both nature and society.
Who is known as the 'father of electricity'?
A) Nikola Tesla
B) Michael Faraday
C) Benjamin Franklin
D) Thomas Edison
- 2. What device is used to measure electric current?
A) Voltmeter
B) Capacitance meter
C) Ohmmeter
D) Ammeter
- 3. What is the unit of electric charge?
A) Ampere
B) Volt
C) Coulomb
D) Ohm
- 4. What did Alessandro Volta invent?
A) The voltaic pile
B) The electromagnet
C) The light bulb
D) The transformer
- 5. Which scientist discovered electromagnetic induction?
A) James Clerk Maxwell
B) Anders Jonas Ångström
C) Heinrich Hertz
D) Michael Faraday
- 6. What is the main component of a simple electric circuit?
A) A capacitor
B) A transformer
C) A power source
D) A relay
- 7. Who discovered the electron?
A) Ernest Rutherford
B) J.J. Thomson
C) James Chadwick
D) Niels Bohr
- 8. What is the purpose of a capacitor in a circuit?
A) Store electrical energy
B) Detect current
C) Regulate voltage
D) Amplify signals
- 9. What is the function of a resistor?
A) Limit current flow
B) Amplify current
C) Convert AC to DC
D) Increase voltage
- 10. What unit is used to measure electrical resistance?
A) Ohm
B) Ampere
C) Volt
D) Watt
- 11. What is static electricity?
A) Electric fields in motion
B) Loss of electrical energy
C) Accumulation of charge on a surface
D) Flow of current
- 12. What type of current do batteries supply?
A) Direct Current (DC)
B) Alternating Current (AC)
C) Residual Current
D) Pulsating Current
- 13. What principle explains the operation of a transformer?
A) Capacitance
B) Electrolysis
C) Resistance
D) Electromagnetic induction
- 14. What device converts electrical energy into mechanical energy?
A) Transformer
B) Capacitor
C) Generator
D) Electric motor
- 15. What is the basic unit of electric current?
A) Ohm
B) Watt
C) Ampere
D) Volt
- 16. Who formulated the electromagnetic theory?
A) James Clerk Maxwell
B) Michael Faraday
C) Nikola Tesla
D) Albert Einstein
- 17. What is the term for the opposition to the flow of electric current?
A) Capacitance
B) Impedance
C) Reactance
D) Resistance
- 18. What does a transformer do?
A) Changes voltage levels.
B) Measures current.
C) Stores energy.
D) Generates power.
- 19. In what unit is electric power measured?
A) Watt
B) Joule
C) Volt
D) Coulomb
- 20. What instrument is used to measure electric voltage?
A) Ohmmeter
B) Voltmeter
C) Ammeter
D) Galvanometer
- 21. What is the primary function of a diode?
A) Allow current to flow in one direction
B) Regulate voltage
C) Amplify current
D) Store electric charge
- 22. What is the phenomenon where a current-carrying conductor creates a magnetic field?
A) Thermodynamics
B) Electrolysis
C) Electromagnetism
D) Eddy Current
- 23. What is the primary use of a galvanometer?
A) Measure small currents
B) Measure voltage
C) Measure frequency
D) Measure resistance
- 24. What happens to the frequency of AC when it is stepped down in a transformer?
A) It becomes zero
B) It remains the same
C) It halves
D) It doubles
- 25. What is the dominant charge on an electron?
A) Positive
B) Neutral
C) Variable
D) Negative
- 26. In what year did Benjamin Franklin conduct his famous kite experiment?
A) 1752
B) 1776
C) 1801
D) 1740
- 27. What phenomenon occurs when electric charges build up on an object?
A) Electromagnetism
B) Magnetism
C) Current Electricity
D) Static Electricity
- 28. Who invented the first practical light bulb?
A) James Watt
B) Nikola Tesla
C) Alexander Graham Bell
D) Thomas Edison
- 29. Which particle is positively charged?
A) Electron
B) Photon
C) Proton
D) Neutron
- 30. What did Benjamin Franklin use to demonstrate electricity?
A) A kite
B) A glass jar
C) A balloon
D) A metal rod
- 31. Which scientist is known for his work on the photoelectric effect?
A) James Clerk Maxwell
B) Niels Bohr
C) Albert Einstein
D) Isaac Newton
- 32. What does a circuit breaker do?
A) Automatically breaks the circuit under excess current
B) Limits voltage
C) Stores energy
D) Increases current flow
- 33. Who is credited with inventing the first practical electrical battery?
A) Nikola Tesla
B) Alessandro Volta
C) Thomas Edison
D) Michael Faraday
- 34. Which law relates voltage, current, and resistance?
A) Newton's Law
B) Ohm's Law
C) Kirchhoff's Law
D) Faraday's Law
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