PHS Edexcel Higher Science Feb mock: Physics (2)

After it bounces, why does a dropped ball not return to it's original height?

• The ball has lost energy to it's surroundings

• Gravity pulls the ball downwards

• The ball is 100% efficient

• The ball is not made of the right materials

What shape would you draw on the card to show the magnetic field around the wire?

• circle

• eliptical

• similar to a bar magnet

• there is no magnetic field around the wire

Which direction would the magnetic field be around the wire going through the card?

• anti-clockwise

• clockwise

• upwards

• downwards

Which of these would allow you to work out the shape of the magnetic field around the wire? (tick all that apply)

• arrange multiple plotting compasses all over the card, they will point in the direction of the field.

• sprinkle iron filings on the card, the pattern produced will show the magnetic field

• use a single plotting compass, draw a dot where the compass is pointing, then move the compass so the tail is on the dot and repeat

• sprinkle copper filings on the card, the pattern produced will show the magnetic field

Which rule allows us to predict the direction of the force a current carrying wire will experience within a magnetic field?

• Fleming's left hand rule

• Fleming's right hand rue

• Right hand grip rule

• Left hand grip rule

In the right-hand grip rule, what does the thumb show?

• the magnetic field, north to south

• the magnetic field, south to north

• the direction of the current, positive to negative

• the direction of the current, negative to positive

What does each digit represent in Fleming's left hand rule?

• First finger: current. Second finger: magnetic field. Thumb: motion

• First finger: magnetic field. Second finger: current. Thumb: motion

• First finger: motion. Second finger: magnetic field. Thumb: current

• First finger: magnetic field. Second finger: motion. Thumb: current

Which direction will the wire move in this example?

• left

• right

• forwards

• backwards

The interaction between the magnetic fields produced by a current carrying wire and a permanent magnet create a pair of action-reaction forces. What can you say about these forces?

• They are equal in size and in opposite directions

• They are balanced forces

• They are equal in size and act in the same direction

• The permanent magnet has a larger force than the force from the wire

How many metres are 25mm?

• 25,000

• 0.025

• 2500

• 0.25