alleryThe strength of an electromagnet can be increased by
ARemoving the iron core from the solenoid
BDecreasing the current and the number of turns
CIncreasing the current or the number of turns
DHeating the coil to a high temperature
Answer & Solution
Correct answer: C. Increasing the current or the number of turns
1. The chapter section on electromagnets lists factors.
2. More current produces a stronger field.
3. More turns also produce a stronger field.
4. Using a soft iron core further multiplies the field.
_Source: Selina Concise Physics Class 10, Ch 10 Electromagnetism (Mistral OCR'd PDF), section on electromagnet_
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