Anormal polarity magnet moves toward a stationary coil at 20 cm/s, and induces a maximum current of –8 ma. which scenarios would induce the same maximum current and the same current direction (–), if the distance between the two objects is the same? check all that apply. a stationary magnet and a coil rotating at 20 cm/s rather than moving both the magnet and the coil moving toward each other at 10 cm/s each a reversed polarity magnet moving toward a stationary coil at 10 cm/s a normal polarity magnet stationary with a coil approaching at 15 cm/s a reversed polarity magnet moving away from the coil at 20 cm/s

both the magnet and the coil moving toward each other at 10 cm/s each

Explanation:

Here we need to find a situation in which the direction of current will not change and also the magnitude will remain same

Now we know that due to relative motion of coil and magnet the magnetic flux linked with the coil will change and this will induce current in the coil.

Now if we do not change the polarity of magnet then the direction of current will remain the same and here if the relative motion of the coil and magnet is same then the magnitude of current will be same

SO as here in the situation it the relative velocity of coil with respect to magnet is same and there is no change in polarity of magnet then the magnitude of current as well as the direction will remain same always.

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.

answer: 31, 5556. 952 seconds