When the current in a toroidal solenoid is changing at a rate of 0.0275 a/s, the magnitude of the induced emf is 12.4 mv. when the current equals 1.34 a, the average flux through each turn of the solenoid is 0.00285 wb. how many turns does the solenoid have?

Idon’t quite understand this problem

Which best describes how fluids change as they travel through different portions of the convection currents? they change to solids at the outer portion of the convection currents. they change to solids at the inner portion of the convection currents. they become more dense at the outer portion of the convection currents. they become more dense at the inner portion of the convection currents

Which of the following statement is false