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Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
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4316

Which of the following statements about a moving object is correct?

  • A. When accelerating, the resultant force acting on it must be equal to zero.
  • B. There must always be a non-zero resultant force acting on it.
  • C. At a steady velocity, the resultant force acting on it must be equal to zero
  • D. At a steady velocity, the air resistance must be equal to zero.
View Answer & Discuss (4) WAEC 2019
4317

If the efficiency of a transformer is 100%, which of the following equations would be correct? 
 

  • A. N\(_p\)E\(_p\) = N\(_s\)E\(_s\)
  • B. N\(_s\)I\(_p\)= N\(_p\)I\(_s\)
  • C. N\(_s\)I\(_s\) = N\(_p\)I\(_p\)
  • D. I\(_p\)E\(_s\) = I\(_s\)E\(_p\)
View Answer & Discuss (4) WAEC 2019
4318

A freshly demagnetized bar magnet is placed in the East-West direction to ensure that

  • A. the molecular magnets remain randomly arranged. 
  • B. the molecular magnets are properly aligned
  • C. it is affected by the earth's magnetic field
  • D. the magnetic domains are within the earth's field
View Answer & Discuss (6) WAEC 2019
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4319

 Which of the following graphs above of a charge Q against potential difference V across the capacitor is correct?

 

  • A. A
  • B. B
  • C. C
  • D. D
View Answer & Discuss (5) WAEC 2019
4320

A small amount of air is introduced into the vacuum above the mercury in a mercury barometer tube. The mercury level goes down because the air molecules

 

 

  • A. heat the mercury and make it expand
  • B. increase the pressure above the mercury. 
  • C. cool the mercury and make it contract.
  • D. decrease the pressure above the mercury
View Answer & Discuss WAEC 2019
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Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
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