Contact And Non-contact Forces (GCSE Physics)

A student measures the weight (force due to gravity) of an object using a spring balance on Earth and then on the Moon. Which will change and why?

A charged balloon sticks to a neutral wall after being rubbed on hair. Which statement best explains why the balloon sticks?

A small compass deflects when placed near a current-carrying straight conductor. Which non-contact effect causes the compass needle to move?

Which of these best describes the electric force between two small charged spheres if the distance between them is doubled?

Which statement correctly describes what a step-down transformer does at the consumer end of the National Grid?

A textbook rests on a table. Which force pairs act on the textbook and are equal in magnitude when it is at rest?

A charged rod is brought near, but does not touch, an uncharged metal sphere that is earthed. Electrons flow to ground so the near side becomes positively charged and attraction occurs. This process is called:

Which of these is a correct pairing: force and whether contact or non-contact?

A person stands on an insulating platform and touches a charged dome. Why is there no dangerous current through the person when the dome has low voltage (small potential difference) relative to ground?

Which of the following pairs are both examples of contact forces?

A charged rod repels another rod at a distance. Which property of the rods causes the strength of that non-contact force to change if you move them further apart?