# physics

In a lightning bolt, 13 C of charge flows in a time of 1.5*10-3 s. Assuming that the lightning bolt can be represented as a long, straight line of current, what is the magnitude of the magnetic field at a distance of 29 m from the bolt?

1. 👍 0
2. 👎 0
3. 👁 118
1. The current is
I = Q/(time) = 13/1.5*10^-3s = 8670 Amps

Use the formula for the B-field around an infinite linear current at distance R.

B = mu* I/(2 pi R)

Where mu is the permeabilty of free space.

1. 👍 0
2. 👎 0
posted by drwls

## Similar Questions

1. ### Physics

In a lightning bolt, 16 C of charge flows in a time of 1.5 10-3 s. Assuming that the lightning bolt can be represented as a long, straight line of current, what is the magnitude of the magnetic field at a distance of 24 m from the

asked by Mary on September 28, 2007
2. ### Physics

In a lightning bolt, 16 C of charge flows in a time of 1.5 10-3 s. Assuming that the lightning bolt can be represented as a long, straight line of current, what is the magnitude of the magnetic field at a distance of 24 m from the

asked by Mary on September 26, 2007
3. ### Physics

In a lightning bolt, a large amount of charge flows during a time of 2.2 10-3 s. Assume that the bolt can be treated as a long, straight line of current. At a perpendicular distance of 28 m from the bolt, a magnetic field of 7.3

asked by Anonymous on March 20, 2014
4. ### Physics

Consider a lightning bolt where 15 C of charge flows for 1500 seconds. Assume that the lightning bolt is a long, straight line current. What is the magnitude of the magnetic field at a distance of 25 m from the bolt?

asked by Melchie on March 7, 2019
5. ### physics

The current in a lightning bolt is 1.6 105 A. How many coulombs of charge pass through a cross-sectional area of the lightning bolt in 0.70 s? I don't know how to set this up???

asked by Brianna on May 16, 2012
6. ### Physics

During a thunderstorm, a lightning bolt carries current between a cloud and the ground below. If a lightning bolt transports a total charge of 80 C in 0.001 s, what is the magnitude of the average current? A

asked by Joe on July 6, 2016
7. ### science

the potential difference between a cloud and the earth is 1000000000. in a lightning bolt 20c of charge pass from the cloud to the earth in a time of 0.004. calculate the current that flows from the cloud to the earth.

asked by howard on August 13, 2018
8. ### Phys

A typical lightning bolt has about 10.0 C of charge. How many excess electrons are in a typical lightning bolt?

asked by Anonymous on March 25, 2014
9. ### physics

A typical lightning bolt has about 10.0C of charge. How many excess electrons are in a typical lightning bolt?

asked by Keilah on January 27, 2012
10. ### physics

A lightning bolt may carry a current of 1.00 ✕ 104 A for a short time interval. What is the resulting magnetic field 134 m from the bolt? Assume that the bolt extends far above and below the point of observation.

asked by Chris on April 6, 2014

More Similar Questions