$1.$ A sodium ion $($Na$)$ is electrically repelled by an aluminum ion $($Al$^3).$

$1$ point

TRUE

FALSE

Clear selection

$2.$ Coulomb's law requires the distance between the charges to be taken centre$-$to$-$centre.

$1$ point

TRUE

FALSE

Clear selection

$3.$ In Coulomb's law, if the magnitude of each charge Q$$ and Q$$ is doubled, the magnitude of Felec is doubled.

$1$ point

TRUE

FALSE

Clear selection

$4.$ In Coulomb's law, if the distance between the charges is halved, the magnitude of Felec is quadrupled.

$1$ point

TRUE

FALSE