planes, helecopters, trains,
a good conducter of electricity needs what object to work
the electric eel conduct electricity like how lights need electricity to work and like how the human body needs electricity to work.
You need to be more specific. Electricity works the same everywhere -- voltage and current are used to do work.
Objects that need electricity to work include lamps, televisions, computers, refrigerators, and smartphones. Generally, any device that has electronic components or requires power for operation would need electricity to function properly.
a conductor and a source of energy
All types of electrical devices need electricity to make them operate.
To get a LASER to work you need to excite it with energy. The most workable form of energy to do that is electricity. There ae several ways of exciting LASERs to work.
Burning of fossil fuels (coal, oil and natural gas) is used in industry, transport and the generation of electricity.
Cars need petrol to work. It's like we need food, and we use fossil fuels for electricity.
the tv of course
Because it is a machine ! Almost every machine requires some form of electricity to run.
Devices such as smartphones, computers, refrigerators, air conditioners, and lights all require electricity to function. Any electrical appliance or tool that relies on powered circuits to operate will need electricity to work.