Start free

Physics · Electromagnetic Induction

NEET (UG) 2023 — Question 18

A 12 V,60 W12 \mathrm{~V}, 60 \mathrm{~W} lamp is connected to the secondary of a step down transformer, whose primary is connected to ac mains of 220 V . Assuming the transformer to be ideal, what is the current in the primary winding?

  1. Option A:

    2.7 A

  2. Option B:

    3.7 A

  3. Option C:

    0.37 A

  4. Option D:

    0.27 A

    Correct

Answer: D

Step-by-step solution

For ideal transformer

Pinput =Poutput (VI)in =60220×I=60I=0.27 A\begin{aligned} & P_{\text {input }}=P_{\text {output }} \\ & (V I)_{\text {in }}=60 \\ & 220 \times I=60 \\ & I=0.27 \mathrm{~A} \end{aligned}
Solution figure

Answer key and solution verified before publishing.

Practise Electromagnetic Induction

Start with this question, then two more from the same chapter — with a tutor that explains every step. Free.

Solve a similar one free
Exam
NEET (UG) 2023
Paper
2023 paper
Subject
Physics
Chapter
Electromagnetic Induction
Topic
Eddy Currents, AC Generator and Transformers

More Electromagnetic Induction questions from this paper

A 12 V , 60 W lamp is connected to the secondary of a step down… | NEET (UG) 2023 PYQ with Solution · DhiX AI