A coil of wire is placed in a magnetic field. If the magnetic field strength is
Practice Questions
Q1
A coil of wire is placed in a magnetic field. If the magnetic field strength is increased, what happens to the induced EMF in the coil?
It increases
It decreases
It remains the same
It becomes zero
Questions & Step-by-Step Solutions
A coil of wire is placed in a magnetic field. If the magnetic field strength is increased, what happens to the induced EMF in the coil?
Step 1: Understand what a coil of wire is. It is a loop or series of loops of wire that can conduct electricity.
Step 2: Know what a magnetic field is. It is an area around a magnet where magnetic forces can be felt.
Step 3: Learn about magnetic flux. It is the amount of magnetic field passing through the coil.
Step 4: Remember Faraday's law of electromagnetic induction. It states that the induced EMF (electromotive force) in a coil is related to how quickly the magnetic flux changes.
Step 5: Realize that increasing the magnetic field strength means more magnetic field lines are passing through the coil.
Step 6: Understand that when the magnetic field strength increases, the magnetic flux through the coil also increases.
Step 7: Conclude that since the magnetic flux is increasing, the induced EMF in the coil will also increase.
Faraday's Law of Electromagnetic Induction – The induced EMF in a coil is proportional to the rate of change of magnetic flux through the coil.
Magnetic Flux – Magnetic flux is the product of the magnetic field strength and the area through which it passes, and it influences the induced EMF.
