MCQ

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.What are t...

2009 Summer

MCQ

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?

2009 Summer

MCQ

CH9 - MAGNETS AND CURRENTS

A wire perpendicular to the page carries an electric current in a direction out of the page. There are four compasses near the wire.Which compass show...

2009 Summer

MCQ

CH9 - MAGNETS AND CURRENTS

A transformer has 50 turns on its primary coil and 100 turns on its secondary coil. An alternating voltage of 25.0 V is connected across the primary c...

2009 Summer

Theory

CH9 - MAGNETS AND CURRENTS

(a) Four rods are shown in Fig. 8.1.[Image_1: plastic rod, iron rod, wooden rod, brass rod]Fig. 8.1State which of these could be held in the hand at o...

2009 Summer

Theory

CH9 - MAGNETS AND CURRENTS

The apparatus in Fig. 10.1 is called a force-on-conductor balance. When there is an electric current $I$ as shown in XY, there is a force on XY that p...

2009 Summer

MCQ

CH9 - MAGNETS AND CURRENTS

A permanent magnet is brought near to a piece of copper. The copper is not attracted by the magnet.Why is there no attraction?

2009 Winter

MCQ

CH9 - MAGNETS AND CURRENTS

Four plotting compasses are placed in the magnetic field of two identical bar magnets as shown in the diagram.Which compass is shown pointing in the w...

2009 Winter

MCQ

CH9 - MAGNETS AND CURRENTS

Which device is designed to allow a small direct current (d.c.) to control a large direct current (d.c.)?

2009 Winter

MCQ

CH9 - MAGNETS AND CURRENTS

A transformer is to be used to provide a 10 V output from a 100 V supply.What are suitable numbers of turns for the primary coil and for the secondary...

2009 Winter

MCQ

CH1 - MEASUREMENTS AND UNITS

The diagram shows an enlarged drawing of the end of a metre rule. It is being used to measure the length of a small feather. What is the length of the...

2016 Summer

MCQ

CH2 - FORCES AND MOTION

A train begins a journey from a station and travels 60 km in a time of 20 minutes. What is the average speed of the train?

2016 Summer

MCQ

CH2 - FORCES AND MOTION

Two runners take part in a race. The graph shows how the speed of each runner changes with time. What does the graph show about the runners at time $...

2016 Summer

MCQ

CH2 - FORCES AND MOTION

A cup contains hot liquid. Some of the liquid evaporates. What happens to the mass and what happens to the weight of the liquid in the cup?

2016 Summer

MCQ

CH2 - FORCES AND MOTION

An object has a mass of 50 kg.The gravitational field strength on Earth is $10.0 \text{ N/kg}$.The gravitational field strength on a distant planet is...

2016 Summer

MCQ

CH1 - MEASUREMENTS AND UNITS

A student wishes to determine the density of an irregularly-shaped stone. First he finds the mass of the stone. Next he lowers the stone into a measur...

2016 Summer

MCQ

CH2 - FORCES AND MOTION

Which is an example of a force?

2016 Summer

MCQ

CH3 - FORCES AND PRESSURE

The diagram shows an object of weight $W$ and an object of weight $Z$ balanced on a uniform metre rule. Which equation relating to $W$, $Z$, $a$ and $...

2016 Summer

MCQ

CH4 - FORCES AND ENERGY

A skier walks from the bottom of a ski slope to the top and gains 10 000 J of gravitational potential energy.She skis down the slope. At the bottom of...

2016 Summer

MCQ

CH4 - FORCES AND ENERGY

A coal-fired power station generates electricity. Coal is burnt and the energy released is used to boil water. The steam from the water makes the gene...

2016 Summer