Worksheet: Magnetic Field due to a Long Straight Conductor Carrying a Constant Current
In this worksheet, we will practice calculating the magnitude of the magnetic field produced by a long straight current-carrying wire at a given distance from the wire.
A long, straight, horizontal wire carries a left-to-right current of 20 A. If the wire is placed in a uniform magnetic field of magnitude T that is directed vertically downward, what is the resultant magnitude of the magnetic field 20 cm above the wire?
- A T
- B T
- C T
- D T
- E T
The figure shows two long straight horizontal wires that are parallel and a distance apart, where cm. If the wires carry currents A and A, in opposite directions, at what distance between them from the top wire is the net magnetic field zero?