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?
Increases
Decreases
Remains constant
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?
Step 1: Understand that a coil of wire can generate electricity when it is in a magnetic field.
Step 2: Learn about Faraday's law of electromagnetic induction, which states that a change in magnetic field can induce an electromotive force (EMF) in the coil.
Step 3: Recognize that increasing the strength of the magnetic field is a change that affects the coil.
Step 4: Conclude that if the magnetic field strength increases, it will cause a greater change in the magnetic environment around the coil.
Step 5: Therefore, according to Faraday's law, a greater change in the magnetic field strength will result in a greater induced EMF in the coil.
Faraday's Law of Electromagnetic Induction – This law states that the induced EMF in a coil is directly proportional to the rate of change of magnetic flux through the coil.
