Theory

CH9 - MAGNETS AND CURRENTS

(a) The transformer in Fig. 8.1 is used to convert 240V a.c. to 6V a.c.Fig. 8.1(i) Using the information above, calculate the number of turns on the s...

2010 Summer

2

Theory

CH9 - MAGNETS AND CURRENTS

(a) Fig. 9.1 illustrates the left hand rule, which helps when describing the force on a current-carrying conductor in a magnetic field.Fig. 9.1One dir...

2010 Summer

1

Theory

CH9 - MAGNETS AND CURRENTS

(a) In Fig. 8.1, a magnet is moving towards one end of a solenoid connected to a sensitive centre-zero meter. During this movement a current is induce...

2011 Winter

3

Theory

CH9 - MAGNETS AND CURRENTS

The north pole of a bar magnet is placed next to end P of an iron bar PQ, as shown. As a result, magnetic poles are induced in the iron bar. [Image_1...

2009 Summer

2

Theory

CH9 - MAGNETS AND CURRENTS

An electromagnet is used to separate magnetic metals from non-magnetic metals. Why is steel unsuitable as the core of the electromagnet?A It forms a p...

2009 Summer

1

Theory

CH9 - MAGNETS AND CURRENTS

Which statement about a magnet is not correct?A. It can attract another magnet.B. It can attract an unmagnetised piece of iron.C. It can repel another...

2010 Winter

1

Theory

CH9 - MAGNETS AND CURRENTS

A chain of steel nails and a chain of iron nails hang from a strong magnet. The chains are then carefully removed from the magnet.What happens to the ...

2010 Winter

2

Theory

CH9 - MAGNETS AND CURRENTS

Four nails, A, B, C and D, are tested to find which makes the strongest permanent magnet.One of the nails is placed against a bar magnet and the numbe...

2011 Winter

3

Theory

CH9 - MAGNETS AND CURRENTS

A horseshoe magnet is brought near to an unmagnetised iron bar. [Image_1: Diagram of horseshoe magnet with labeled N and S poles near an iron bar] W...

2011 Winter

2

Theory

CH9 - MAGNETS AND CURRENTS

Which diagram represents the direction of the magnetic field around a straight wire carrying a current out of the page?

2011 Winter

4

MCQ

CH1 - MEASUREMENTS AND UNITS

A pendulum makes 50 complete swings in 2 min 40 s. What is the time period for 1 complete swing?

2020 Summer

MCQ

CH2 - FORCES AND MOTION

A student investigates the motion of a ball rolling down a slope.The diagram shows the speed $v$ of the ball at different times $t$.Which statement de...

2020 Summer

1

MCQ

CH2 - FORCES AND MOTION

Which statement about acceleration is correct?

2020 Summer

1

MCQ

CH2 - FORCES AND MOTION

Which statement correctly describes the effects of placing a heavy load in a car?

2020 Summer

MCQ

CH2 - FORCES AND MOTION

A mass of 6.0 kg rests on the surface of a planet.On this planet, $g = 20 \text{ N/kg}$.What is the weight of the object?

2020 Summer

MCQ

CH1 - MEASUREMENTS AND UNITS

The mass of a measuring cylinder is 190 g.400 cm3 of liquid is put into the measuring cylinder.The total mass of the measuring cylinder and the liquid...

2020 Summer

MCQ

CH3 - FORCES AND PRESSURE

The diagram shows a wooden beam PQ, of negligible weight, which is attached to a wall by a hinge at P and kept in a horizontal position by a vertical ...

2020 Summer

1

MCQ

CH2 - FORCES AND MOTION

Which quantity is a vector?

2020 Summer

MCQ

CH2 - FORCES AND MOTION

An object of mass 1.2 kg is moving with a velocity of 2.0 m/s when it is acted on by a force of 4.0 N. The velocity of the object increases to 5.0 m/s...

2020 Summer

MCQ

CH4 - FORCES AND ENERGY

The diagram shows part of a rollercoaster ride with the car at different positions. The car runs freely down from position X to position Y and up the ...

2020 Summer