Theory

CH23 - ELECTROMAGNETIC INDUCTION

A metal wheel consists of an axle A, eight spokes and a rim, as shown in Fig. 1.1. Point X is on the rim at the end of one of the spokes. The rim ...

2024 Winter

3

Theory

CH23 - ELECTROMAGNETIC INDUCTION

(a) State Faraday’s law of electromagnetic induction. ................................................................................................

2024 Summer

7

Theory

CH23 - ELECTROMAGNETIC INDUCTION

(a) Define magnetic flux density. ......................................................................................................................

2023 Winter

4

Theory

CH23 - ELECTROMAGNETIC INDUCTION

A heavy aluminium disc has a radius of 0.36 m. The disc rotates with the wheels of a vehicle and forms part of an electromagnetic braking system on th...

2023 Summer

5

Theory

CH23 - ELECTROMAGNETIC INDUCTION

(a) State what is meant by a magnetic field..............................................................................................................

2023 Summer

5

Theory

CH23 - ELECTROMAGNETIC INDUCTION

(a) A Hall probe containing a thin slice of semiconducting material is placed in a uniform magnetic field of flux density $B$. The largest faces of th...

2023 Winter

4

Theory

CH23 - ELECTROMAGNETIC INDUCTION

(a) Define magnetic flux density. .......................................................................................................................

2023 Winter

5

Theory

CH23 - ELECTROMAGNETIC INDUCTION

(a) State Lenz's law of electromagnetic induction........................................................................................................

2022 Winter

4

Theory

CH23 - ELECTROMAGNETIC INDUCTION

(a) State Lenz's law.....................................................................................................................................

2021 Summer

4

Theory

CH23 - ELECTROMAGNETIC INDUCTION

(a) State Lenz's law....... [2](b) A metal ring is suspended from a fixed point P by means of a thread, as shown in Fig. 10.1.[Image_1: Fig. 10.1 show...

2021 Summer

3

MCQ

CH1 - PHYSICAL QUANTITIES & UNITS

The SI unit for potential difference (the volt) is given, in base units, by

2010 Summer

1

MCQ

CH1 - PHYSICAL QUANTITIES & UNITS

The product of pressure and volume has the same SI base units as

2010 Summer

3

MCQ

CH1 - PHYSICAL QUANTITIES & UNITS

An ion is accelerated by a series of electrodes in a vacuum. A graph of the power supplied to the ion is plotted against time.What is represented by t...

2010 Summer

1

MCQ

CH1 - PHYSICAL QUANTITIES & UNITS

A vector quantity $V$ is resolved into two perpendicular components $X$ and $Y$. The angle between $V$ and component $X$ is $\theta$. The angle betwee...

2010 Summer

1

MCQ

CH3 - KINEMATICS

The diagram shows a velocity-time graph for a vehicle. The vehicle, moving at 4.0 ms-1, begins to accelerate at time = 0. What is the vehicle's ac...

2010 Summer

2

MCQ

CH3 - KINEMATICS

A small steel ball falls freely under gravity after being released from rest. Which graph best represents the variation of the height $h$ of the ball...

2010 Summer

1

MCQ

CH4 - DYNAMICS

Two equal masses travel towards each other on a frictionless air track at speeds of $60 \text{ cm s}^{-1}$ and $40 \text{ cm s}^{-1}$. They stick toge...

2010 Summer

2

MCQ

CH4 - DYNAMICS

A brick weighing 20 N rests on an inclined plane. The weight of the brick has a component of 10 N parallel with the plane. The brick also experiences ...

2010 Summer

2

MCQ

CH4 - DYNAMICS

The diagram shows two identical spheres X and Y. Initially, X moves with speed v directly towards Y. Y is stationary. The spheres collide elastical...

2010 Summer

3

MCQ

CH5 - FORCES, DENSITY & PRESSURE

Forces of 3 N, 4 N and 5 N act at one point on an object. The angles at which the forces act can vary. What is the value of the minimum resultant for...

2010 Summer

3