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

Which quantity can be measured in electronvolts (eV)?

2014 Summer

2

MCQ

CH1 - PHYSICAL QUANTITIES & UNITS

The unit of specific heat capacity is $\text{J kg}^{-1} \text{K}^{-1}$.What is its equivalent in terms of SI base units?

2014 Summer

2

MCQ

CH1 - PHYSICAL QUANTITIES & UNITS

What is the vertical component of this displacement vector?

2014 Summer

2

MCQ

CH2 - MEASUREMENT TECHNIQUES

The resistance of a lamp is calculated from the value of the potential difference (p.d.) across it and the value of the current passing through it.Whi...

2014 Summer

2

MCQ

CH2 - MEASUREMENT TECHNIQUES

The display on a cathode-ray oscilloscope shows the signal produced by an electronic circuit. The time-base is set at 5.0 ns per division and the Y-ga...

2014 Summer

2

MCQ

CH2 - MEASUREMENT TECHNIQUES

A digital caliper is used to measure the 28.50 mm width of a plastic ruler. The digital caliper reads to the nearest 0.01 mm. What is the correct way...

2014 Summer

2

MCQ

CH3 - KINEMATICS

An experiment is performed to measure the acceleration of free fall $g$. A body falls between two fixed points. The four measurements shown below are ...

2014 Summer

2

MCQ

CH3 - KINEMATICS

In a cathode-ray tube, an electron is accelerated uniformly in a straight line from a speed of $4 \times 10^{3} \: \text{ms}^{-1}$ to $2 \times 10^{7}...

2014 Summer

2

MCQ

CH3 - KINEMATICS

The graph shows how the speed $v$ of a sprinter changes with time $t$ during a 100 m race. What is the best estimate of the maximum acceleration of...

2014 Summer

2

MCQ

CH4 - DYNAMICS

A tennis ball is dropped onto a table and bounces back up. The table exerts a force F on the ball. Which graph best shows the variation with time t o...

2014 Summer

2