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A low-loss transformer has 230 volts applied to the primary and gives 4.6 volts in the secondary. Secondary is connected to a load which draws 5 ampere of current. The current (in ampere) in the primary is
  • a)
    0.1
  • b)
    1.0
  • c)
    10
  • d)
    250
Correct answer is option 'A'. Can you explain this answer?
Most Upvoted Answer
A low-loss transformer has 230 volts applied to the primary and gives ...
Given:
Primary voltage (Vp) = 230 V
Secondary voltage (Vs) = 4.6 V
Secondary current (Is) = 5 A

To find: Primary current (Ip)

Step-by-Step Solution:

1. Calculate the turns ratio (N) of the transformer using the voltage ratio formula:

N = Vs / Vp = 4.6 / 230 = 0.02

2. Since the transformer is low-loss, we can assume that the power in the primary is equal to the power in the secondary:

Vp * Ip = Vs * Is

3. Substitute the values given and solve for Ip:

Ip = (Vs * Is) / Vp = (4.6 * 5) / 230 = 0.1 A

Therefore, the primary current is 0.1 A.

Answer: (a) 0.1
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A low-loss transformer has 230 volts applied to the primary and gives ...
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A low-loss transformer has 230 volts applied to the primary and gives 4.6 volts in the secondary. Secondary is connected to a load which draws 5 ampere of current. The current (in ampere) in the primary isa)0.1b)1.0c)10d)250Correct answer is option 'A'. Can you explain this answer?
Question Description
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