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

4

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

2

MCQ

CH1 - PHYSICAL QUANTITIES & UNITS

Which unit is an SI base unit?

2024 Summer

4

MCQ

CH1 - PHYSICAL QUANTITIES & UNITS

Which of the following could have the same units as force?

2024 Summer

3

MCQ

CH3 - KINEMATICS

The velocity of an object changes from an initial velocity $u$ to a final velocity $v$. The vectors represent these velocities. Which single vector r...

2024 Summer

8

MCQ

CH3 - KINEMATICS

An object is moving with initial velocity $u$. The object then moves with uniform acceleration $a$ for time $t$ until it reaches final velocity $v$. ...

2024 Summer

4

MCQ

CH3 - KINEMATICS

Which calculation produces a vector quantity?

2024 Summer

4

MCQ

CH2 - MEASUREMENT TECHNIQUES

A thermometer can be read to an accuracy of ±0.5°C. This thermometer is used to measure a temperature rise from 40°C to 100°C. What is the percent...

2024 Summer

4

MCQ

CH3 - KINEMATICS

The diagram shows the path of a golf ball. Which row describes changes in the horizontal and vertical components of the golf ball’s velocity ...

2024 Summer

4

MCQ

CH3 - KINEMATICS

An aircraft flies from London to Sydney in a time of 21 hours 40 minutes. The distance travelled is 17 000 km. What is the average speed of the airc...

2024 Summer

3

MCQ

CH3 - KINEMATICS

A golf club hits a golf ball. The graph shows how the force $F$ on the ball varies with time $t$. Which graph shows how the velocity $v$ of the bal...

2024 Summer

3

MCQ

CH4 - DYNAMICS

What is meant by the mass and by the weight of an object on the Earth?

2024 Summer

5