The polarity of an electromagnetic can be determined using the second right-hand rule.
A. True
B. False
Is it false?
Current passing through a conductor is increased from 10 A to 15 A. This decreases the strength of the magnetic field produced by the conductor.
A. True
B. False
is it true?
If you know how the electromagnet is wound and what direction the current is flowing through the magnet coil, you can get the direction of the magnetic field through the magnet by a right hand rule. I do not know what you call first or second.
The B field around the conductor is proportional to the current through it, so true.
To determine the polarity of an electromagnetic using the second right-hand rule, you need to follow these steps:
1. Hold your right hand with your fingers pointing in the direction of the current.
2. Curl your fingers toward the direction of the magnetic field.
3. Your thumb will point in the direction of the electromagnetic's polarity.
Therefore, the statement "The polarity of an electromagnetic can be determined using the second right-hand rule" is true.
Regarding the second question, the strength of the magnetic field produced by a conductor is directly proportional to the current passing through it. Increasing the current will actually increase the strength of the magnetic field, not decrease it. Therefore, the statement "Current passing through a conductor is increased from 10 A to 15 A. This decreases the strength of the magnetic field produced by the conductor" is false.