Physics
Grade-10
Easy
Question
In the given figures, there are four electromagnets. Which among them is the strongest?
Hint:
The strength of electromagnet depends on their number of turns, strength of current and the core the core is made of up which is a magnetic material. Soft magnetic core is best for electromagnet strength.
The correct answer is:
- Electromagnet is a device that consists of a core of magnetic material that is surrounded by a coil through which an electric current is passed to magnetize the core
- The strength of electromagnet depends on their number of turns, strength of current and the core the core is made of up which is a magnetic material. Soft magnetic core is best for electromagnet strength.
- In (A), electromagnet has a soft iron rod inside it which increases the magnetic field in the electromagnet.
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