Home › ICSE Class 10 › Physics › Electromagnetism › The strength of an electromagnet can be increase…
The 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_
Related questions
Certain galvanometers use eddy currents to provide electromagnetic:The SI unit of inductance is the:Eddy current flow patterns are said to resemble swirling eddies in:Foucault lived from 1819 until:Who discovered eddy currents?Swirling induced currents in a metal plate are called:What in Faraday's equation represents Lenz's law?Lenz's law says the induced current opposes the change in: