If it is spherical then where/how does the current flow?
No, water is not a good conductor of electricity. Check related link below for more information.
Yes, calcium is a good conductor of heat and electricity. Most metals are good conductors of heat and electricity. Most nonmetals are not good conductors of heat and electricity.
NB (Niobium) is a better electricity conductor compared to PD (Palladium). NB has a lower resistivity and higher conductivity than PD, making it a more efficient conductor for electricity.
Wow, is it? You have to be more specific. What is a good conductor and of what, heat, sound, electricity or spaghetti monsters.
A copper penny (is more an alloy than pure copper) is a conductor of electricity.
A good conductor allows electricity or heat to flow easily through it due to high conductivity, while a bad conductor restricts the flow of electricity or heat due to low conductivity. Good conductors typically have many free electrons that can move easily, while bad conductors have fewer free electrons, making it harder for electricity or heat to pass through.
Plain distilled (or double distilled) water with no impurities is a poor conductor of electricity. The more impurities it has the better conductor it becomes
water is the best conductor of electricity, compare to air the atoms in water is more closely to each other and that makes water more conductive than air, glass can be conductor it depends on it composition but not as good as water and wood is not a conductor unless it's wet.
No - copper is a better conductor than nickel.
Copper is a better conductor of electricity than silver. Copper has a higher electrical conductivity and is more commonly used for electrical wiring and components due to its cost-effectiveness and efficiency in conducting electricity.
No, a lemon is a better conductor of electricity than a potato. This is because the citric acid and water content in a lemon make it a better electrolyte compared to a potato, allowing for the flow of electricity more efficiently.
A substance that lets electricity flow through it is called a conductor (or sometimes, to be more explicit, it is called an electrical conductor). Substances which do not permit the flow of electricity are called insulators.