The coil in a loudspeaker has 75 turns and a radius of 3.4 cm. The magnetic field is perpendicular to the wires in the coil and has a magnitude of 0.27 T. If the current in the coil is 270 mA, what is the total force on the coil?

Ithink the answer would be a 

Answer: 1.4 seconds which is the third optionexplanation: current is defined as the flow of charge per timetherefore, the equation that relates current, charge and time can be expressed as follows: i = δq / δtwhere: i is the current given = 1.8 ampereδq is the charge given = 2.5 coulombδt is the time required for the flow of the given charges to give the 1.8 ampere.substitute with the givens in the above equation to get the time as follows: 1.8 = 2.5 / δtδt = 2.5 / 1.8 = 1.38888 which is approximately 1.4 secondshope this was !

+10 that is always the common denominator

Where is the diagram?