Acurrent‑carrying wire lies in a region where there is an external magnetic field, but there is no magnetic force acting on the wire. how can this be? the wire itself is moving in the direction of the magnetic field at just the right speed. the magnetic field is generated by a second wire carrying a current in the opposite direction. the wire is a circular loop whose plane is oriented parallel to the magnetic field. the current is carried by equal numbers of positive and negative charges that flow in opposite directions along the wire. the length of the wire is oriented either parallel or antiparallel to the magnetic field lines at the location of the wire.

The length of the wire is oriented either parallel or antiparallel to the magnetic field lines at the location of the wire.

Explanation:

As we know that the magnetic force on current carrying wire is given as

now we know that

i = current flowing in the wire

L = length vector of the wire which is along the current flowing in the wire

B = magnetic field strength

now we know that

so here if the force is zero then either

OR

so correct answer will be

The length of the wire is oriented either parallel or antiparallel to the magnetic field lines at the location of the wire.

gpe = mass x gravity constant x height or… gpe = mgh

where… mass: measured in kilograms (kg)

gravity: gravity constant on earth = 10.00 m/s2

height: measured in meters (m)

gpe: measured in joules (j) or kilojoules (kj)

how do you solve gpe?

gravitational potential energy (gpe) is the energy an object has because of its position above the. ground.

gpe = mass x gravity constant x height or… gpe = mgh.

mass:

note: to earn full marks when solving science word problems, you must show your work:

formula.

example:

given values:

mass = 0.3 kg.