Usually one or more cells (batteries) installed inside the little car,
to run its little motor or motors.
To make a remote-controlled electromagnet, you would need a remote control system, an electromagnet, and a power source. You can connect the power source to the electromagnet through a relay controlled by the remote system, allowing you to turn the electromagnet on and off wirelessly. This setup would enable you to control the magnetic force remotely.
Electricity
Yes
The above example is considered a load because it consumes energy from the source it is connected to. It draws power from the source to operate or perform its function. In contrast, an energy source is a provider of energy that can supply power to a load.
To operate the remote control light fixture in your home, first make sure the light fixture is connected to a power source. Then, use the remote control to turn the light on and off, adjust the brightness, and change the lighting settings as needed. Be sure to point the remote control towards the light fixture for it to work properly.
The difference between a current control device and voltage controlled device is that for current controlled device, the current is constant and the voltage is variable while for a voltage controlled device, the voltage is constant and the current is variable.
I'll assume you mean operate a generator, and one of the big sources is wind
Hydroelectric power plants can only operate near rivers. This is because the water is the source of energy for this plant.
An energy source is needed to provide electrical energy to the circuit components such as resistors, capacitors, and bulbs. Without an energy source, there would be no electrical current flowing through the circuit, and no power for the devices to operate.
The advantages of kinetic energy is its abundant energy source and it can be created easily. However, its chief disadvantage is its difficulty to be controlled making it an unpredictable energy.
No, lasers are not infinite sources of light and energy. They require a power source to operate and have limitations on their output.
If I understand the question correctly, you're basically asking if you can use an infrared remote instead of a radio remote to control a radio controlled device.Let me say that again: radio controlled device.No, you cannot. If you're an electronics engineer, you could probably substitute some kind of IR receiver for the radio circuitry, and then you'd be able to control it with your infrared remote. But at that point, it would no longer be a radio controlled device.