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 doubled, what happens to the induced EMF?
It doubles
It remains the same
It halves
It quadruples
Questions & Step-by-Step Solutions
A coil of wire is placed in a magnetic field. If the magnetic field strength is doubled, what happens to the induced EMF?
Correct Answer: Induced EMF will also double.
Step 1: Understand that a coil of wire in a magnetic field can have an induced EMF (electromotive force) when the magnetic field changes.
Step 2: Know that the induced EMF is directly related to the strength of the magnetic field.
Step 3: If the magnetic field strength is doubled, it means the strength is increased two times.
Step 4: Since the induced EMF is directly proportional to the magnetic field strength, doubling the magnetic field will also double the induced EMF.
Step 5: Therefore, if the magnetic field strength is doubled, the induced EMF will also be doubled.
Faraday's Law of Electromagnetic Induction – The induced EMF in a coil is directly proportional to the rate of change of magnetic flux through the coil, which includes the strength of the magnetic field.
Magnetic Flux – Magnetic flux is the product of the magnetic field strength and the area through which it passes, influencing the induced EMF.
