You need 5 blocks of the smaller object to contain the same amount of volume of the bigger object
Answer:
when the direction of the Current changes.
Explanation:
Electromagnet refers to an iron ore wrapped around with a coil of wire, in presence of electric current. As it acts like a magnet, when current is passed through it.
The north & south poles of magnetic fields produced by such magnet, change with direction of current passed through it.
This question is probably referring to heat energy transferring from the car to its surroundings.
I think that the answer is C)
