PHYSICS (TEST)

The diagram shows the current–voltage graph for a metal wire.

What can be deduced from the graph?

• A As voltage increases, the temperature of the wire increases.

• B As voltage increases, the temperature of the wire decreases.

• C As voltage increases, the resistance of the wire increases.

• D As voltage increases, the resistance of the wire remains constant.

The circuit diagram shows two identical lamps connected in parallel to a cell. Three ammeters, X, Y and Z, are also connected in the circuit, as shown.

Which statement about the current in X is correct?

• A It is equal to the current in Y and to the current in Z.

• B It is less than either the current in Y or the current in Z.

• C It is equal to the sum of the current in Y and the current in Z.

• D It is equal to the difference between the current in Y and the current in Z.

The speed–time graph shows the motion of an object.

How far does the object travel at constant speed?

• 25 m

• 50 m

• 75 m

• 125 m

A cyclist is travelling in a straight line along a horizontal road at a constant speed. A constant driving force F acts on the cyclist in the forward direction shown.

Which statement about the magnitude of the frictional forces acting on the cyclist is correct?

• A The magnitude is equal to F.

• B The magnitude is smaller than F, but greater than zero.

• C The magnitude is greater than F.

• D The magnitude is zero.

The diagram shows the magnetic field around a solenoid carrying an electric current.What happens to the strength of the magnetic field and the distance between the field lines when the current is increased?

• strength of magnetic field decreases, distance between field lines decreases

• strength of magnetic field decreases, distance between field lines increases

• strength of magnetic field increases, distance between field lines decreases

• strength of magnetic field increases, distance between field lines increases

The graph represents the motion of a car.

How far has the car moved between 0 and 5 s?

• A 2 m

• B 10 m

• C 25 m

• D 50 m

Forces of 3N and 4 N act at right angles, as shown.

What is the resultant force?

• 1N along XZ

• 5N along XZ

• 5N along OY

• 7N along OY

Which statement about mass or weight is not correct?

• Masses can be compared using a balance.

• Mass is a force.

• Weights can be compared using a balance.

• Weight is a force.

A truck is towing a car along a straight horizontal road at a constant speed. The rope breaks. Which row gives the direction of the initial acceleration of the truck after the rope breaks and the reason for the acceleration?

• Direction of acceleration of the truck: left

  Reason: the driving force is greater than the resistive forces on the truck

• Direction of acceleration of the truck: left

  Reason: the driving force is smaller than the resistive forces on the truck

• Direction of acceleration of the truck: right

  Reason: the driving force is greater than the resistive forces on the truck

• Direction of acceleration of the truck: right

  Reason: the driving force is smaller than the resistive forces on the truck