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

A stopwatch is used to time a runner in a race. The diagrams show the stopwatch at the start and at the end of the race. How long did the runner take...

2017 Summer

MCQ

CH2 - FORCES AND MOTION

On Earth, a ball is dropped and falls 2.0 m in a vacuum. The acceleration of the ball at 1.0 m is $10 \text{ m/s}^2$. What is the acceleration of the...

2017 Summer

MCQ

CH2 - FORCES AND MOTION

The speed-time graph represents a motorcycle journey. In which part of the graph is the acceleration equal to zero? [Image_1: Speed-time graph with ...

2017 Summer

MCQ

CH3 - FORCES AND PRESSURE

Diagram 1 shows a sealed plastic bottle containing a hollow glass sphere and a steel ball.Diagram 2 shows the same bottle after it has been shaken.Dia...

2017 Summer

MCQ

CH2 - FORCES AND MOTION

A student is weighed on laboratory scales.Which row about weight and mass is correct?[Table_1]

2017 Summer

MCQ

CH1 - MEASUREMENTS AND UNITS

A measuring cylinder containing only water is placed on an electronic balance. A small, irregularly shaped stone is now completely immersed in the wat...

2017 Summer

MCQ

CH2 - FORCES AND MOTION

A boat is travelling at a steady speed in a straight line across the surface of a lake.Which statement about the boat is correct?

2017 Summer

MCQ

CH3 - FORCES AND PRESSURE

The diagram shows three uniform, solid wooden blocks with a square cross-sectional area resting on a horizontal table.Which list puts the blocks in or...

2017 Summer

MCQ

CH4 - FORCES AND ENERGY

Energy resources are used to generate electricity.Which resource is renewable and does not release carbon dioxide when being used to produce electrici...

2017 Summer

MCQ

CH2 - FORCES AND MOTION

A student does some simple exercises. In which exercise is the most work done?

2017 Summer