Some pacemakers employ magnetic reed switches to enable doctors to change their mode of operation without surgery. a typical reed switch can be switched from one position to another with a magnetic field of 5.0x10-4 t. what current must a wire carry if it is to produce a 5.0x10-4 t field at 0.50m? i = ? ka

1.25 kA

Explanation:

The magnitude of the magnetic field produced by a current-carrying wire is given by:

where

is the vacuum permeability

is the current in the wire

r is the distance from the wire at which the field is calculated

In this problem, we have:

is the intensity of the magnetic field

is the distance from the wire

Re-arranging the equation, we can find the intensity of the current in the wire:

false

explanation:

boats, things on boats luggage are way more heavy then water.

b. lifting dumbbell weight at 20-degree angle from the body after a 45-degree angle