The energy supplied to a speaker is increased. what will happen to the sound the speaker produces?

Loudness of sound will increase

Explanation:

As we know that energy of sound wave depends on the amplitude of sound

and we can relate it by formula

here we know that as we increase the amplitude of the sound the energy of the sound will also increase.

Also we know that the intensity of sound is defined as the rate of energy per unit area

so here intensity of sound is used to determine the loudness of sound

so here loudness of sound will increase due to increase in amplitude of the sound

so we can say as we increase the energy the loudness will increase

the answer is the first electromagnet (a). this is because it has more coils around the ferromagnetic material. increasing the number of coils increases the surface area in which the metal interacts with the current in the coil. this enables more atoms in the metal to become aligned hence becoming more magnetized.

conduct current i mean it makes sense