How is an electromagnet made ? Write any two ways by which the strength of electromagnet can be increased.
Generated by claude-sonnet-4-6 · 2026-06-15 06:47 · grounding rag
Model Answer
An electromagnet is made by winding a coil of insulated copper wire around a soft iron core and passing electric current through the coil.
Two ways to increase its strength:
- Increasing the number of turns of wire in the coil.
- Increasing the electric current flowing through the coil.
Source: Chapter 12, Section 12.2.4
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Explanation
- The textbook defines an electromagnet as "a core of soft iron wrapped around with a coil of insulated copper wire" — use this exact phrasing.
- For the two ways, examiners accept: increasing turns, increasing current, or using a stronger/larger soft iron core. Pick any two clearly stated points.
- Do not confuse electromagnet construction with a solenoid alone — the soft iron core is the key distinguishing feature.