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 geologist compares the volumes of three rocks, X, Y and Z. Three measuring cylinders contain different volumes of water. He places each rock into on...

2015 Summer

MCQ

CH2 - FORCES AND MOTION

A car moves with constant speed and then constant acceleration.Which graph is the speed-time graph for the car?

2015 Summer

MCQ

CH2 - FORCES AND MOTION

A car travels 100 km. The journey takes two hours. The highest speed of the car is 80 km/h, and the lowest speed is 40 km/h. What is the average speed...

2015 Summer

MCQ

CH2 - FORCES AND MOTION

Diagram 1 shows a piece of foam rubber that contains many pockets of air. Diagram 2 shows the same piece of foam rubber after it has been compressed s...

2015 Summer

MCQ

CH1 - MEASUREMENTS AND UNITS

A metal block has the dimensions shown. Its mass is 1000 g.What is the density of the metal?

2015 Summer

MCQ

CH3 - FORCES AND PRESSURE

Four objects are each acted on by only two forces, as shown.Which object is in equilibrium?

2015 Summer

MCQ

CH3 - FORCES AND PRESSURE

A student measures the length of a spring. She then hangs different weights from the spring. She measures the length of the spring for each different ...

2015 Summer

MCQ

CH4 - FORCES AND ENERGY

Which energy resource is used to generate electricity without using any moving parts?

2015 Summer

MCQ

CH4 - FORCES AND ENERGY

A cyclist travels down a hill from rest at point X, without pedalling. The cyclist applies his brakes and the cycle stops at point Y. Which energy c...

2015 Summer

MCQ

CH3 - FORCES AND PRESSURE

"The diagram shows a simple mercury barometer.Which height is used as a measurement of atmospheric pressure?"

2015 Summer