The metal which is the best conductor of electricity is

Options

A. Iron
B. Copper
C. Silver
D. Aluminium

Answer

To determine which metal is the best conductor of electricity among the given options, we can follow these steps:

### Step 1: Identify the Metals
We have the following metals to consider:
- Iron
- Copper
- Silver
- Aluminium

### Step 2: Understand Conductivity
Conductivity refers to the ability of a material to allow the flow of electric current. Metals are generally good conductors of electricity due to the presence of free electrons that can move easily through the metal lattice.

### Step 3: Compare Conductivity of Each Metal
- **Silver**: Silver is known to have the highest electrical conductivity among all metals. Its conductivity is due to its atomic structure, which allows for a high density of free electrons.
- **Copper**: Copper is the second-best conductor of electricity. It is widely used in electrical wiring due to its excellent conductivity and lower cost compared to silver.
- **Aluminium**: Aluminium has good conductivity but is less conductive than both silver and copper. It is often used in overhead power lines due to its lightweight and resistance to corrosion.
- **Iron**: Iron is the least conductive among the metals listed here. It has a lower density of free electrons compared to the other metals.

### Step 4: Conclusion
Based on the comparison, we can conclude that:
- Silver is the best conductor of electricity among the given options.

### Final Answer
The metal which is the best conductor of electricity is **Silver**.

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