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

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

Theory

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 sh...

2009 Summer

Theory

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

2009 Winter

Theory

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

Theory

CH9 - MAGNETS AND CURRENTS

Which device is designed to allow a small direct current (d.c.) to control a large direct current (d.c.)?A. a generatorB. a motorC. a relayD. a transf...

2009 Winter

Theory

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

Theory

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? A. Copper is ferrous b...

2009 Winter

Theory

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

CH1 - MEASUREMENTS AND UNITS

Which measuring devices are most suitable for determining the length of a swimming pool and the thickness of aluminium foil? [Table_1]

2022 Summer

MCQ

CH2 - FORCES AND MOTION

A man stands next to a railway track.A train travelling at 40 m/s takes 2.0 s to pass the man.What is the length of the train?

2022 Summer

MCQ

CH2 - FORCES AND MOTION

A speed–time graph is used to describe the motion of an object. Which quantities are calculated from the gradient of the graph and from the area un...

2022 Summer

MCQ

CH2 - FORCES AND MOTION

On the Moon, all objects fall with the same acceleration. Which statement explains this?

2022 Summer

MCQ

CH3 - FORCES AND PRESSURE

A measuring cylinder contains 30 cm³ of a liquid.Some more of the liquid is added until the liquid level reaches the 50 cm³ mark. The reading on the...

2022 Summer

MCQ

CH2 - FORCES AND MOTION

An object on the end of a string moves in a clockwise circular path at constant speed. The diagram shows the object as viewed from above. What is the ...

2022 Summer

MCQ

CH2 - FORCES AND MOTION

A beam is pivoted at one end, as shown. The beam weighs 6.0 N and its weight acts at a point X 40 cm from the pivot. A force of 4.0 N is applied to th...

2022 Summer

MCQ

CH2 - FORCES AND MOTION

On the diagram shown, what is the magnitude of the resultant force of the two vectors?[Image: A diagram with two vectors; one vector of 6.0 N upwards ...

2022 Summer

MCQ

CH2 - FORCES AND MOTION

Three situations are listed.1. An object has a resultant force acting on it.2. A moving object experiences an impulse.3. An object is decelerating.In ...

2022 Summer

MCQ

CH2 - FORCES AND MOTION

A ball of mass 0.16 kg is moving forwards at a speed of 0.50 m/s. A second ball of mass 0.10 kg is stationary. The first ball strikes the second ball....

2022 Summer