Question

A bird stands on an electric transmission line carrying 1800 A. The line has 2.0×10 ⁻²

ohm resistance per meter, and the bird's feet are 3.0 cm apart. What voltage does the bird experience?
A. 1.35 V
B. 1.62 V
C. 1.08 V
D. 1.21 V

Answer 1

The voltage experienced by a bird standing on a high voltage line with feet 3 cm apart, carrying a current of 1800 A and a resistance of 2.0×10⁻² ohm per meter, is calculated using Ohm’s Law and equals 1.08 V.

Step-by-step explanation:

To determine the voltage experienced by a bird standing on an electric transmission line, we need to calculate the potential difference across the bird's feet.

Since we know the line carries a current of 1800 A and has a resistance of 2.0×10⁻² ohm per meter, we can use Ohm's Law (V = IR). The bird's feet are 3.0 cm apart, which is 0.03 meters.

Therefore, the resistance between the bird's feet is (2.0×10⁻² ohm/m) × 0.03 m = 6.0×10⁻⁴ ohms.

Now, using Ohm's Law, the voltage (V) experienced by the bird is:

V = I × R

= 1800 A × 6.0×10⁻⁴ ohms

= 1.08 V, which corresponds to the choice (C) 1.08 V.