Physics Exam Past Questions and Answers | JAMB, WAEC and NECO

Physics is the science that studies the nature and properties of matter and energy. It covers topics like motion, heat, light, sound, electricity, magnetism, and the structure of atoms.

• Question 611: The net charge on the atom is zero because Options:
  A) the electrons and the protons that are charged are in the nucleus
  B) the total charge on the electrons is equal to the total charge on the protons
  C) the neutrons from a shield around the charged protons
  D) the number of electrons in an atom is half the number of protons
  E) A and B above
  Show Answer
  The correct answer is B .
• Question 612: From the generating station to each substation power is transmitted at a very high voltage so as to reduce Options:
  A) hysteresis loss
  B) eddy current loss
  C) magnetic flux leakage
  D) heating in the cells
  Show Answer
  The correct answer is B .
• Question 613: Which of the following is a desirable property of a fuse Wire? Options:
  A) High expansively
  B) High thermal conductivity
  C) Low density
  D) Low electrical resistivity
  E) Low melting point
  Show Answer
  The correct answer is D .
• Question 614: The angle between the magnetic meridian and the geographic meridian at a locality on the earth is the Options:
  A) longitude of the locality
  B) angle of inclination at the locality
  C) latitude of the locality
  D) angle of declination of the locality
  Show Answer
  The correct answer is D .
• Question 615:

  In a series R-L-C circuit at resonance, the voltages across the resistor and the inductor are 30V and 40V respectively. What is the voltage across the capacitor?

  Options:
  A) 30V
  B) 70V
  C) 50V
  D) 40V
  Show Answer
  The correct answer is D .
• Question 616:

  If the charge of electricity is K wh is N4, what is the cost of operating an electrical appliance rated 250 V, 2 A for six hours?

  Options:
  A) N28
  B) N12
  C) N16
  D) N24
  Show Answer
  The correct answer is B .
• Question 617:

  A few grains of table salt were put in a cup of cold water, kept at constant temperature and left undistributed. Eventually all the water tested salty. This action isdue to?

  Options:
  A) convection
  B) osmosis
  C) capillarity
  D) diffusion
  Show Answer
  The correct answer is D .
• Question 618: When a current of 1 .0A flows in an electrolyte for 3.0h, a mass of 1 .0g is deposited. What mass will be deposited in 10.0h if a current of 3.0A flows through the electrolyte? Options:
  A) 30.0g
  B) 24.0g
  C) 10.0g
  D) 6.0g
  E) 0.4g
  Show Answer
  The correct answer is B .
• Question 619: An organic pipe closed at one end is 80cm long. Determine the frequency of the fundamental note assuming that the speed of sound in air is 340ms^-1 Options:
  A) 106Hz
  B) 213Hz
  C) 318Hz
  D) 425Hz
  Show Answer
  The correct answer is A .
• Question 620: Which of the following types of motion is/are exhibited by a cylindrical drum rolling down an incline plane? Options:
  A) Random and rotational
  B) Rotational and oscillatory
  C) Rotational only
  D) Translations only
  E) Translational and rotational
  Show Answer
  The correct answer is E .