Which device converts electrical energy into mechanical energy?

Last Updated: 25 Jun 2026

The most useful approach is to identify the physical quantity, phenomenon, law, or device named in the stem and connect it with its standard definition. Here, the relevant answer is “Electric motor.” A sound solution relies on the governing concept rather than a memorised option letter, because option order may change in another paper. The distractors in this question—Generator, Transformer, Battery—do not satisfy the exact condition stated. The final selection must agree with the explanation and marked answer: Electric motor. If it describes an experiment or device, recall the input, physical process, and output.

AGenerator

BTransformer

CElectric motor

DBattery

Correct Answer: Electric motorYour Answer: C

Explanation

— the scientifically appropriate response is Electric motor. Option-wise review: Electric motor is correct under the condition given in the stem. Generator is incorrect because it describes a different quantity or phenomenon and does not meet the stated condition. Transformer is also incorrect; although it may be a valid physics term, its definition or application is not the one asked here. Battery is incorrect because it fails the governing relation or characteristic relevant to this case. Therefore, option C, Electric motor, is factually and logically consistent with the question. An electric motor converts electrical energy into mechanical (rotational) energy.

Important Notes

Read the complete stem before looking at the options. Identify whether the demand is a definition, unit, formula, direction, cause, effect, image characteristic, or device principle. In this record, the confirmed answer is Electric motor.
Do not interchange closely related terms: mass and weight; distance and displacement; speed and velocity; heat and temperature; reflection and refraction; real and virtual image; current and potential difference; power and energy. Such pairs generate common SSC distractors.
Eliminate Generator, Transformer, Battery here because none fulfils the exact requirement of the stem. The final answer and correct-index field must point to option C.
During final revision, practise stating why every wrong option is wrong. This converts recognition into understanding and reduces guesswork.
Exam memory point: connect Electric motor directly with the key wording of the question, then verify it once against the relevant definition or formula before marking the answer.Works on Fleming's left hand rule

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FAQ

SSC CGL Physics FAQs

Common questions and clear answers for this topic.

How many physics questions usually appear in the SSC CGL exam?

Physics typically makes up a small portion of the General Science questions, usually focused on concepts rather than numerical problems.

Which physics topics are most important for SSC CGL?

Basic mechanics, heat, sound and light, and electricity and magnetism are the areas that come up most consistently across previous papers.

Do I need to solve numerical problems for SSC CGL physics?

Rarely. Most questions are conceptual and test everyday understanding rather than calculation skills.

Is NCERT physics enough for SSC CGL preparation?

NCERT textbooks from classes 9 and 10 build a strong enough conceptual base for most of what SSC CGL asks.

How can I make physics concepts easier to remember for SSC CGL?

Connecting concepts to everyday observations, like why a thermos keeps tea warm, makes them far easier to recall than memorizing definitions.

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