Respuesta :
Answer:
A
Explanation:
A compass can show that an electric field is present. So, a battery, a coil of wire and a compass together could demonstrate that an electric current produces a magnetic field.
Answer:
a battery, a coil of wire and a compass
Explanation:
A compass can show that an electric field is present. So, a battery, a coil of wire and a compass together could demonstrate that an electric current produces a magnetic field.