A step-down transformer is connected to main supply `200V` to operate a `6V`, `30W` bulb. The current in primary is

Question

A step-down transformer is connected to main supply `200V` to operate a `6V`, `30W` bulb. The current in primary is

A step-down transformer is connected to main supply `200V` to operate a `6V`, `30W` bulb. The current in primary is
A. `3A`
B. 1.5 A
C. 0.3 A
D. 0.15 A

Monjur Alahi

4 views

2025-01-04 04:42

1 Answers

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Salim Ahmed Kawsar · Accepted Answer · 2023-02-05T15:29:48+06:00

Salim Ahmed Kawsar

Correct Answer - D
`P_(P)=P_(S)`
`I_(P)*e_(P)=P_(S)`
`I_(P)=(P_(S))/(e_(P))=(30)/(200)=0.15A`

4 views Answered 2023-02-05 15:29