beam of electrons moves in astraight line parallel to the beam ofprotons in the same direction, as inthe figure. The force between themis….

The force between the beam of electrons and the beam of protons moving in the same direction and parallel to each other would be attractive. This is because electrons and protons have opposite charges, and according to Coulomb's law, opposite charges attract each other.

Here are the steps to understand this:

1. Identify the charges: Electrons carry a negative charge, while protons carry a positive charge.

2. Apply Coulomb's Law: This law states that the force between two charges is directly proportional to the product of their charges and inversely proportional to the square of the distance between them. In this case, since the charges are opposite, the force would be attractive.

3. Consider the direction of movement: Since both the electrons and protons are moving in the same direction, this does not change the attractive nature of the force between them.

So, the force between the beam of electrons and the beam of protons is attractive.