Use some equipment
I've never tried it and I could be wrong but I believe you could pass an electric current through a vegetable, especially one with a high water content. Similar to how you can pass an electric current through a person.
An electric current primarily consists of the flow of electrons through a conductor, typically in a closed loop circuit. This movement of electrons generates a flow of charge that can be harnessed for various applications, such as powering electrical devices.
To cause an electric current to flow through one of the copper wires, Theresa would need to connect the wire to a power source, such as a battery or electrical outlet. By completing a circuit with the wire connecting the positive and negative terminals of the power source, electrons will flow through the wire, creating an electric current.
The heating effect is used. Normally the current flows through the fuse without undue heating. But if too much current passes through, the fuse will heat and melt, thus stopping the current which could cause a fire if it was not stopped .
Magnetism could be produced due to the flow of electrical current. This was first discovered by Oersted. By changing the magnetic flux linked with a coil electric current could be induced. This was first studied by Michael Faraday. Just due to the orbital motion or spin motion of electron magnetism is produced in tiny form and is known as magnetic dipoles. Such dipoles getting oriented in different form lead to form dia, para and ferro magnetic materials.
Urey and Miller sent an electric current through the mixture to simulate the energy from lightning strikes in the atmosphere of early Earth. This was done to test the hypothesis that such energy could have fueled the chemical reactions necessary for the formation of organic molecules, such as amino acids.
Electrocution is death by means of an electric current passing through the body. The current usually causes the heart to stop, but can also cause death through heating and destruction of tissue.
Alternating Current could fit this description in this question.
yes
"see if a magnet sticks to it, if it does it is metallic" Wrong..... Not all metals are metallic. You could run an electric current through it to test for metals.
The magnetic field must be changing relative to the conductor (wire). So the wire could move through the field, or the field could move past the wire, or you could have a changing field (from an electromagnet with varying current).
The heating effect is used. Normally the current flows through the fuse without undue heating. But if too much current passes through, the fuse will heat and melt, thus stopping the current which could cause a fire if it was not stopped.