Fill in the blank.
For the magnetic field created around a current carrying wire in an electromagnet, the _________ the current, the _______ the magnetic field.
A: larger, weaker.
B: Larger, stronger.
C: smaller, stronger.
B: Larger, stronger.
An electromagnet is created by wrapping a wire conducter around a metal core and sending a current through it. If the number of turns in the conducting wire are decreased and the current is kept the same, how does that affect the magnetic strength?
A: Decreases the magnetic strength
B: Increases the magnetic strength
C: it has no affect and the magnetic strength remains the same.
A: Decreases the magnetic strength.
To determine the relationship between the current and the magnetic field created around a current-carrying wire in an electromagnet, we can refer to Ampere's Law. According to Ampere's Law, the magnetic field created by a current-carrying wire is directly proportional to the current flowing through the wire.
So, in relation to the blank, we need to find the option where an increase in current results in a corresponding increase in the magnetic field.
Comparing the given options:
A: larger, weaker.
B: Larger, stronger.
C: smaller, stronger.
From the explanation of Ampere's Law, we can conclude that the correct answer is Option B: Larger, stronger. As the current through the wire increases, the magnetic field around the wire becomes stronger.