What happens to the magnetic field strength inside a long solenoid if the curren
Practice Questions
Q1
What happens to the magnetic field strength inside a long solenoid if the current is doubled? (2021)
It remains the same
It doubles
It quadruples
It halves
Questions & Step-by-Step Solutions
What happens to the magnetic field strength inside a long solenoid if the current is doubled? (2021)
Step 1: Understand what a solenoid is. A solenoid is a coil of wire that creates a magnetic field when electricity flows through it.
Step 2: Know that the magnetic field strength inside a solenoid depends on the current (the flow of electricity) passing through the wire.
Step 3: Remember the relationship: the magnetic field strength is directly proportional to the current. This means if you change the current, the magnetic field strength changes in the same way.
Step 4: If the current is doubled (increased by two times), the magnetic field strength will also double.
Step 5: Conclude that doubling the current results in doubling the magnetic field strength inside the solenoid.
