What are the units of resistance?

If resistors are connected in series,the current through each resistor remains the same.

$A$ child has drawn the electric circuit to study Ohm's law as shown in the figure. His teacher told him that the circuit diagram needs correction. Study the circuit diagram and identify the errors,then describe the correct circuit configuration.

What is the process of depositing a layer of gold on silver called?

What happens to the resistance of a conductor when its temperature is increased?

Why are alloys used to make standard resistors?