1. Friction is the force that slows down things or prevents them from moving.

    Friction is the force that slows down things or prevents them from moving.

    See less
    • 6
  2. It is because the excess air exerts pressure on the sides of the balloon.

    It is because the excess air exerts pressure on the sides of the balloon.

    See less
    • 6
  3. Those substances which allow electric current to pass through them are called conductors.

    Those substances which allow electric current to pass through them are called conductors.

    See less
    • 7
  4. The rate of flow of charge is called electric current.

    The rate of flow of charge is called electric current.

    See less
    • 5