Asked Dec 19, 2019

Birds resting on high - voltage power lines are a common sight.
The copper wire on which a bird stands is 2.2 cm in diameter
and carries a current of 50. A. If the bird’s feet are 4.0 cm
apart, calculate the potential difference between its feet.


Expert Answer

Step 1

Write the expression for the resistance of the wire


Image Transcriptionclose

R=LL PL (rd² /4) 4pL (zd)

Step 2

Write the expression for p...


Image Transcriptionclose

V = IR 41PL (ad²)


Want to see the full answer?

See Solution

Check out a sample Q&A here.

Want to see this answer and more?

Solutions are written by subject experts who are available 24/7. Questions are typically answered within 1 hour.*

See Solution
*Response times may vary by subject and question.
Tagged in

Current Electricity

Related Physics Q&A

Find answers to questions asked by student like you
Show more Q&A

Q: A painter climbs a ladder leaning against a smoothwall. At a certain height, the ladder is on the ve...

A: (a)The friction between the wall and the ladder is negligible as the wall is smooth.


Q: The potential difference across a resting neuron in thehuman body is about 75.0 mV and carries a cur...

A: Given:Potential difference across the resting neuron = 75 mVCurrent in the neuron = 0.200 mA


Q: Batteries are rated in terms of ampere - hours (A ⋅ h). For example,a battery that can deliver a cur...

A: Write the expression for power.


Q: Can an object have momentum without having energy? Defend your answer.

A: Momentum is a property of an object due to its mass and velocity. Momentum = mvSo, when an object ha...


Q: The cars in a soapbox derby have no engines; they simplycoast downhill. Which of the following desig...

A: Rotational Energy of any car can be given as,


Q: A parallel-plate capacitor has capacitance 3.00 µF. (a) How much energy is stored in the capacitor i...

A: (a) The energy stored in the capacitor can be calculated as,


Q: A car owner forgets to turn off the headlights of his car while itis parked in his garage. If the 12...

A: Since there is two 2 headlights the total power is 72W


Q: What happens to the strength of the gravitational field at the surface of a star that shrinks?

A: The gravitational field strength is increase at the surface of a star that shrinks.


Q: The heating element of a coffeemaker operates at 120. Vand carries a current of 2.00 A. Assuming the...

A: Expression to calculate the amount of heat energy is,