Resistance Calculation Quiz

Given the formula R = ρl/A, calculate the resistance of a wire with ρ = 1.68 × 10^-8 ohm meters, l = 1 meter, and A = 2 × 10^-6 square meters.

• 8.4 × 10^-3 ohms

• 8.4 × 10^-2 ohms

• 8.4 × 10^-4 ohms

• 8.4 × 10^-1 ohms

Calculate the resistance for a wire with ρ = 2.5 × 10^-8 ohm meters, l = 3 meters, and A = 5 × 10^-7 square meters.

• 0.15 ohms

• 1.5 × 10^-2 ohms

• 0.015 ohms

• 1.5 × 10^-3 ohms

For a wire with ρ = 1.0 × 10^-8 ohm meters, l = 4 meters, and A = 4 × 10^-6 square meters, what is the resistance?

• 1.0 × 10^-2 ohms

• 1.0 × 10^-3 ohms

• 1.0 × 10^-4 ohms

• 1.0 × 10^-1 ohms

A conductor has ρ = 5.6 × 10^-8 ohm meters, l = 10 meters, and A = 2 × 10^-5 square meters. Calculate the resistance.

• 0.028 ohms

• 0.0028 ohms

• 0.28 ohms

• 0.00028 ohms

Determine the resistance of a wire with ρ = 3.0 × 10^-8 ohm meters, l = 5 meters, and A = 1 × 10^-6 square meters.

• 0.15 ohms

• 0.015 ohms

• 1.5 × 10^-3 ohms

• 1.5 × 10^-2 ohms

If ρ = 1.1 × 10^-8 ohm meters, l = 2 meters, and A = 1 × 10^-7 square meters, what is the resistance?

• 0.22 ohms

• 2.2 × 10^-2 ohms

• 0.022 ohms

• 2.2 × 10^-3 ohms

Calculate the resistance for a wire with ρ = 4.5 × 10^-8 ohm meters, l = 8 meters, and A = 2 × 10^-6 square meters.

• 0.18 ohms

• 0.018 ohms

• 0.0018 ohms

• 1.8 × 10^-4 ohms

For a wire with ρ = 2.0 × 10^-8 ohm meters, l = 6 meters, and A = 3 × 10^-6 square meters, what is the resistance?

• 0.04 ohms

• 0.004 ohms

• 0.4 ohms

• 0.0004 ohms

A conductor has ρ = 2.2 × 10^-8 ohm meters, l = 15 meters, and A = 5 × 10^-6 square meters. Calculate the resistance.

• 0.066 ohms

• 0.0066 ohms

• 0.66 ohms

• 6.6 × 10^-4 ohms

Determine the resistance of a wire with ρ = 7.0 × 10^-8 ohm meters, l = 7 meters, and A = 7 × 10^-7 square meters.

• 0.07 ohms

• 0.7 ohms

• 0.007 ohms

• 7.0 ohms