A transformer is required to supply 12 Vrms to operate a toy train set from…

A transformer is required to supply 12 Vrms to operate a toy train set from a 240 Vrms. If the number of turns in the in the secondary coil is 100, calculate the number of turns required in the primary coil
  • A.
    5
  • B.
    12
  • C.
    2000
  • D.
    2400
Correct Answer: Option A
Explanation

(frac{E_s}{E_p} = frac{N_s}{N_p} = frac{240}{12} frac{100}{N_p})
Np = 5

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