In a step-up transformer, the primary coil has MCQ with Answer and Explanation

In a step-up transformer, the primary coil has

A. Fewer turns and thinner wire

B. More turns and thinner wire

C. More turns and thicker wire

D. Fewer turns and thicker wire

Answer: Option D

Solution (By JKExamLibrary)

Step-up: Ns > Np. Primary fewer turns, thicker wire because current higher on primary side (for step-up, Vp < Vs, Ip > Is).

This question belongs to: Science Physics

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Practice More Physics Questions

Question #1 Report Error

Which famous physicist correctly formulated the laws of electromagnetic induction mathematically, later synthesizing all known electromagnetic phenomena into four fundamental equations?

A. André-Marie Ampère

B. Heinrich Hertz

C. James Clerk Maxwell

D. Michael Faraday

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Correct Answer: Option C

Explanation:
While Faraday performed the groundbreaking experimental work discovering electromagnetic induction, it was James Clerk Maxwell who formalized these discoveries mathematically. Maxwell's equations (a set of four differential equations) elegantly united electricity, magnetism, and optics, proving theoretically that light itself is a propagating electromagnetic wave.

This question belongs to: Science Physics

Question #2 Report Error

The main component of natural gas used for cooking is

A. Methane

B. Propane

C. Ethane

D. Butane

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Correct Answer: Option A

Explanation:
Methane (CH₄) is primary component. LPG is mainly propane and butane. CNG is compressed methane. This relates to everyday physics and chemistry.

This question belongs to: Science Physics