Electric Current

Step 1: Use the formula for resistance
The resistance of a wire is given by the formula: where: - is the resistivity of the material, - is the length of the wire, - is the cross-sectional area of the wire.
Step 2: Substitute the given values
Given:
- Resistivity , - Length ,
- Cross-sectional area .
Substitute these values into the formula:
Answer:
Therefore, the resistance of the wire is . So, the correct answer is option (1).

Step 1: Use the formula for charge
The charge passing through a conductor is given by the formula: where:
- is the current,
- is the time the current flows.
Step 2: Substitute the given values
Given:
- Current ,
- Time .
Substitute these values into the formula:
Answer:
Therefore, the total charge that flows through the conductor is . So, the correct answer is option (1).