Is it possible for a planet and moon to generate electricity in some way? Could a combination of magnetic fields and iron content in the crust or core produce electromagnetic induction due to the rotation of either planet or moon, and also the orbit of the moon? Here are a few ideas:
The moon orbits over both poles of the planet, causing an alternating field to pass through it.
The magnetic field of the planet is perpendicular to its axis of rotation, and the moon orbits around its rotational equator in the opposite direction of the spin. This would cause an alternating field through the moon.
The moon orbits like our moon, where it is always facing towards the planet. One of the moon's magnetic poles is pointing towards the planet. As it orbits, the planet experiences an alternating field.
Are any of the above plausible? If so, would they actually generate a voltage in the core of either planet or moon? Are there any other possibilities?