A13.0 g wire of length l = 73.0 cm is suspended by a pair of flexible leads in a magnetic field of 0.410 t. what is the magnitude and direction of the current required to remove the tension in the supporting leads? (indicate the direction with the sign of your answer. take right to be positive.)

a) I = 0.426A

Calculations for the Magnitude of the Current can be viewed on the image attached.

b) The direction of the current depends on the direction of the magnetic field.

force is based upon mass and acceleration.the statement is not always true.

it can be explained from newton's second law of motion.

as per newton's second law of motion the rate of change of momentum is directly proportional to the applied force and takes place along the direction of force.

mathematically it can be written as -

                                              ⇒      

here   k is the proportionality constant whose value is 1.

                                                            [a is the acceleration=dv/dt]

hence we see that force not only depends on mass and acceleration but also on velocity and rate of change of mass. force f will depend on mass and acceleration only when mass is constant.

hence the statement that force is based upon mass and acceleration is false.