What is the purpose of an electric fuse in a domestic circuit?
An electric fuse protects appliances from damage by breaking the circuit if excessive current flows, preventing overheating and potential fires.
What is Fleming’s Left-Hand Rule, and where is it applied?
Fleming’s Left-Hand Rule is used to find the direction of force on a current-carrying conductor in a magnetic field. It’s applied in electric motors to understand the direction of motion.
What are the applications of electromagnetic induction?
Electromagnetic induction is used in devices like electric generators, transformers, and in technologies like magnetic levitation for high-speed trains (Maglev).
What is electromagnetic induction, and who discovered it?
Electromagnetic induction is the process by which a changing magnetic field induces a current in a conductor. Michael Faraday discovered this phenomenon.
How does the number of turns in a solenoid affect the magnetic field strength?
The magnetic field strength inside a solenoid increases as the number of turns increases, as each turn reinforces the magnetic field at the center of the solenoid.
What happens to the magnetic field if the current in a wire loop is increased?
Increasing the current increases the strength of the magnetic field around and at the center of the loop.
What factors affect the strength of the magnetic field around a current-carrying wire?
The magnetic field strength increases with a higher current and decreases as you move farther from the conductor.
Why do magnetic field lines never intersect?
Magnetic field lines never intersect because if they did, it would mean the magnetic field has two directions at the same point, which is physically impossible.
What is the Right-Hand Thumb Rule, and how is it used?
The Right-Hand Thumb Rule is used to determine the direction of the magnetic field around a straight current-carrying conductor. Point your right-hand thumb in the direction of the current, and your fingers will curl in the direction of the magnetic field lines.
How can we detect the magnetic field around a current-carrying conductor?
A magnetic field around a conductor can be detected using a compass or by observing how iron filings arrange themselves around the conductor.
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