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4956

The function of a fuse in an electric circuit is to 

  • A. break the circuit when the current exceeds a certain value
  • B. save energy by reducing voltage
  • C. ensure that the current in the circuit exceeds a certain value
  • D. save energy by reducing the current
View Answer & Discuss WAEC 2024
4957

A body moves with uniform velocity when the resultant force on it is 

  • A. greater than the frictional force acting on it
  • B. less than the frictional force acting on it
  • C. equal to zero
  • D. equal to unity
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4958

The law of conservation of momentum is stated for closed and isolated system. What are the two conditions for a system to be closed and isolated?

  • A. No external force acts on the system and there is no change in mass of the system.
  • B. No external force acts on the system and there is a gain in mass.
  • C. No external force acts on the system and there is a loss in mass.
  • D. An external force acts on the system and there is no change in mass.
View Answer & Discuss WAEC 2024
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4959

A stone of mass 200 g attached to a string is made to revolve in a horizontal circle of radius 1.5 m at a steady speed of 5 m/s. Calculate the tension in the string at the bottom of the circle.

  • A. 5.3 N
  • B. 3.3 N
  • C. 2.0 N
  • D. 1.3 N
View Answer & Discuss (3) WAEC 2024
4960

To convert a milli-ammeter to an ammeter, a resistor of low value is necessary to connect a resistor of 

  • A. low value in series with it
  • B. high value in series with it
  • C. low value in parallel with it
  • D. high value in parallel with it
View Answer & Discuss WAEC 2024
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