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Some of the factors that affect resistance are:
Material: Metals have low resistance and rubber has high resistance.

Length of Wire: Longer wires have more resistance.
Thickness of Wire: Thicker wires have less resistance.

Temperature: Higher temperature can increase resistance in some materials.

Why Robots Need Electricity?

Robots are machines that can move, sense and perform tasks. To do all these things, robots need
energy and most robots get this energy from electricity.

Key Reasons Robots Need Electricity
Some of the reasons why robots need electricity are:

To Move: Robots use motors to move wheels, arms or legs. Electricity powers these motors,
making the robot go forward, backward or perform actions.

To Think (Processing): Robots have microcontrollers or computers
inside them. These devices need electricity to process information
and make decisions.

To Sense the Environment: Robots use sensors to detect light,
distance, temperature or obstacles. Electricity powers these
sensors so the robot can see and feel its surroundings.

To Communicate: Some robots can send signals, display messages
or connect to the internet. Electricity powers their communication
systems.

To Perform Tasks Efficiently: Whether picking objects, cleaning or assembling items, robots
use electricity to perform tasks faster and more accurately than humans.

CIRCUIT

A circuit is a closed path that allows electric current to flow
from a power source to an electrical device and back. Think
of it like a race track, the electrons (tiny particles that carry
electricity) move along the track to deliver energy to the
devices and then return to the start.

Electricity cannot move on its own, it needs a path to flow. A
circuit provides that path. If the path is complete, electricity can
flow and power devices like bulbs, fans, motors or computers.
If the path is broken anywhere (like a wire is cut or a switch is
open), the electricity stops and the device will not work.

Basics of Circuits for Robotics
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