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

What is a reasonable estimate of the mass of a raindrop?

2020 Summer

3

MCQ

CH2 - MEASUREMENT TECHNIQUES

Which quantity is a scalar?

2020 Summer

3

MCQ

CH2 - MEASUREMENT TECHNIQUES

A galvanometer of resistance 5\(\Omega\) is to be used in a null method.In order to protect the galvanometer from damage due to an excessive initial c...

2020 Summer

3

MCQ

CH2 - MEASUREMENT TECHNIQUES

Readings are made of the current $I$ for different voltages $V$ across a fixed resistor. The results are plotted on a graph to show the variation of $...

2020 Summer

3

MCQ

CH3 - KINEMATICS

A stone is dropped from a height of 20 m above water. The graph shows the variation with time of the velocity of the stone. Which statement describ...

2020 Summer

2

MCQ

CH3 - KINEMATICS

A car X is travelling at a constant speed $u$ along a straight road. At time $t = 0$ a second car Y is a distance $d_0$ behind car X and travelling at...

2020 Summer

4

MCQ

CH4 - DYNAMICS

The resultant force acting on an object is slowly increased. Which graph could show the variation with time $t$ of the momentum $p$ of the object?&nb...

2020 Summer

1

MCQ

CH4 - DYNAMICS

An astronaut has a weight of 660 N when she is standing on the Earth's surface. The acceleration of free fall on the surface of Mars is $3.71 \, \tex...

2020 Summer

3

MCQ

CH4 - DYNAMICS

A mass $m_1$ travelling with speed $u_1$ collides with a mass $m_2$ travelling with speed $u_2$ in the same direction. After the collision, mass $m_1$...

2020 Summer

3

MCQ

CH4 - DYNAMICS

The diagrams show a negative electric charge situated in a uniform electric field and a mass situated in a uniform gravitational field. Which row s...

2020 Summer

2