A current of 0.6 A is passed through a step up transformer with a primary coil of 200 turns and a current of 0.1 A...

A current of 0.6 A is passed through a step up transformer with a primary coil of 200 turns and a current of 0.1 A is obtained in the secondary coil. Determine the number of turns in the secondary coil and the voltage across if the primary coil is connected to a 240 V mains.

---

Np / Ns = Vp / Vs = Ip / Is = Ns = (0.6 × 200) / 0.1 = 1200 turns
Vp = 240 V hence Vs = (240 × 1200) / 200 = 1440 V

---

Mutiso answered the question on October 16, 2018 at 11:04

Exams With Marking Schemes

• Grade 1
• Grade 2
• Grade 3
• Grade 4
• Grade 5
• Grade 6
• Grade 7
• Grade 8
• Grade 9
• PP1
• PP2
• Playgroup
• Form 1
• Form 2
• Form 3
• Form 4

Related Questions

---

• What are the applications of mutual induction? (Solved)
  

  What are the applications of mutual induction?

  Date posted: October 16, 2018 .    Answers (1)

• How does mutual induction occur? (Solved)
  

  How does mutual induction occur?

  Date posted: October 16, 2018 .    Answers (1)

• Factors affecting the magnitude of the induced induced electromagnetic force (e.m.f) (Solved)
  

  Factors affecting the magnitude of the induced induced electromagnetic force (e.m.f)

  Date posted: October 16, 2018 .    Answers (1)

• Describe an experiment to show that e.m.f is induced due to the relative motion of the wire or the magnet. (Solved)
  

  Describe an experiment on electromagnetic induction to show that e.m.f is induced due to the relative motion of the wire or the magnet.

  Date posted: October 16, 2018 .    Answers (1)

• Explain unique properties of electromagnetic waves (Solved)
  

  Explain unique properties of electromagnetic waves.

  Date posted: October 16, 2018 .    Answers (1)

• A VHF radio transmitter broadcasts radio waves at a frequency of 30 M Hz. What is their wavelength? (Solved)
  

  A VHF radio transmitter broadcasts radio waves at a frequency of 30 M Hz. What is their wavelength?

  Date posted: October 16, 2018 .    Answers (1)

• What is electromagnetic spectrum? (Solved)
  

  What is electromagnetic spectrum?

  Date posted: October 16, 2018 .    Answers (1)

• A material of density 8.5 gcm^-3 is attached to a piece of wood of mass 100g and density 0.2 gcm^-3. Calculate the volume of material... (Solved)
  

  A material of density 8.5 gcm^-3 is attached to a piece of wood of mass 100g and density 0.2 gcm^-3. Calculate the volume of material X which must be attached to the piece of wood so that the two just submerge beneath a liquid of density 1.2 gcm^-3.

  Date posted: October 16, 2018 .    Answers (1)

• A balloon made up of a fabric weighing 80 N has a volume of 1.0 × 10⁷ cm. the balloon is filled with hydrogen of... (Solved)
  

  A balloon made up of a fabric weighing 80 N has a volume of 1.0 × 10⁷ cm. the balloon is filled with hydrogen of density 0.9 kgm^-3. Calculate the greatest weight in addition to that of the hydrogen and the fabric, which the balloon can carry in air of average density 1.25 kgm^-3

  Date posted: October 16, 2018 .    Answers (1)

• A solid of mass 1.0 kg is suspended using a thread and then submerged in water. If the tension on the thread is 5.0 N,... (Solved)
  

  A solid of mass 1.0 kg is suspended using a thread and then submerged in water. If the tension on the thread is 5.0 N, determine the relative density of the solid.

  Date posted: October 16, 2018 .    Answers (1)

• Applications of Archimedes principle and relative density (Solved)
  

  Applications of Archimedes principle and relative density

  Date posted: October 16, 2018 .    Answers (1)

• Describe experiment to determine the relative density of a cork (Solved)
  

  Describe experiment to determine the relative density of a cork

  Date posted: October 16, 2018 .    Answers (1)

• A wooden block of dimensions 3 cm × 3 cm × 4 cm floats vertically in methylated spirit with 4 cm of its length in... (Solved)
  

  A wooden block of dimensions 3 cm × 3 cm × 4 cm floats vertically in methylated spirit with 4 cm of its length in the spirit. Calculate the weight of the block. (Density of methylated spirit = 8.0 × 10² kgm^-3)

  Date posted: October 16, 2018 .    Answers (1)

• Describe experiment to demonstrate the law of flotation (Solved)
  

  Describe experiment to demonstrate the law of flotation

  Date posted: October 16, 2018 .    Answers (1)

• A block of metal of volume 60 cm³ weighs 4.80 N in air. Determine its weight when fully submerged in a liquid of density 1,200... (Solved)
  

  A block of metal of volume 60 cm³ weighs 4.80 N in air. Determine its weight when fully submerged in a liquid of density 1,200 kgm^-3.

  Date posted: October 16, 2018 .    Answers (1)

• Describe an experiment to demonstrate Archimedes principle (Solved)
  

  Describe an experiment to demonstrate Archimedes principle

  Date posted: October 16, 2018 .    Answers (1)

• Describe the applications of centripetal force (Solved)
  

  Describe the applications of centripetal force.

  Date posted: October 16, 2018 .    Answers (1)

• Derive an expression for centripetal acceleration (Solved)
  

  Derive an expression for centripetal acceleration.

  Date posted: October 16, 2018 .    Answers (1)

• Define the term centripetal force (Solved)
  

  Define the term centripetal force.

  Date posted: October 16, 2018 .    Answers (1)

• A wheel of radius 50 cm is rolled through a quarter turn. Calculate (i) The angle rotated in radians (ii) The distance moved... (Solved)
  

  A wheel of radius 50 cm is rolled through a quarter turn. Calculate (i) The angle rotated in radians (ii) The distance moved by a point on the circumference.

  Date posted: October 16, 2018 .    Answers (1)