A loop of wire is placed in a uniform magnetic field. If the field strength is i
Practice Questions
Q1
A loop of wire is placed in a uniform magnetic field. If the field strength is increased, what happens to the induced current? (2023)
It increases
It decreases
It remains the same
It becomes zero
Questions & Step-by-Step Solutions
A loop of wire is placed in a uniform magnetic field. If the field strength is increased, what happens to the induced current? (2023)
Step 1: Understand that a loop of wire can have a current induced in it when it is placed in a magnetic field.
Step 2: Know that the strength of the magnetic field is called the magnetic field strength.
Step 3: Recognize that when the magnetic field strength increases, it affects the magnetic flux through the loop.
Step 4: Remember that magnetic flux is the amount of magnetic field passing through the loop.
Step 5: Realize that an increase in magnetic flux through the loop induces a current in the wire.
Step 6: Apply Faraday's law, which states that a change in magnetic flux induces an electromotive force (EMF) and thus a current.
Electromagnetic Induction – The process by which a changing magnetic field within a closed loop induces an electromotive force (EMF) and consequently a current.
Faraday's Law – The principle that the induced EMF in a circuit is directly proportional to the rate of change of magnetic flux through the circuit.
