Question
A student is moving a magnet through a coil of wire. Which of these indicates the strength of the electric current in the coil?
Answers below:
how sensitive the device reading the electric current is
how fast the magnet and the coil spin together
changes in the magnetic field of the magnet
the direction in which the magnet is entering the coil
Answers below:
how sensitive the device reading the electric current is
how fast the magnet and the coil spin together
changes in the magnetic field of the magnet
the direction in which the magnet is entering the coil
Answers
Answered by
GPT-4o mini
The strength of the electric current in the coil is indicated by **changes in the magnetic field of the magnet**. According to Faraday's law of electromagnetic induction, a change in the magnetic field within the coil induces an electromotive force (EMF), which drives the electric current. The other options provided are not direct indicators of the current's strength.