Theory

CH23 - ELECTROMAGNETIC INDUCTION

You are provided with a coil of wire, a bar magnet and a sensitive ammeter.Outline an experiment to verify Lenz’s law.

2009 Summer

Theory

CH23 - ELECTROMAGNETIC INDUCTION

An ideal transformer is illustrated in Fig. 6.1.(a) (i) State Faraday’s law of electromagnetic induction...............................................

2009 Winter

Theory

CH23 - ELECTROMAGNETIC INDUCTION

A simple iron-cored transformer is illustrated in Fig. 6.1.Fig. 6.1(a) (i) State why the primary and secondary coils are wound on a core made of iron....

2010 Winter

Theory

CH23 - ELECTROMAGNETIC INDUCTION

A simple iron-cored transformer is illustrated in Fig. 6.1.(a) (i) State why the primary and secondary coils are wound on a core made of iron............

2010 Winter

Theory

CH23 - ELECTROMAGNETIC INDUCTION

The poles of a horseshoe magnet measure 5.0 cm × 2.4 cm, as shown in Fig. 5.1. The uniform magnetic flux density between the poles of the magnet is 8...

2010 Winter

Theory

CH23 - ELECTROMAGNETIC INDUCTION

A transformer is illustrated in Fig. 6.1.(a) (i) Explain why the coils are wound on a core made of iron..................................................

2011 Summer

Theory

CH23 - ELECTROMAGNETIC INDUCTION

(a) Use Fig. 3.2 to(i) state the evidence for the magnet to be undergoing free oscillations during the period $t = 0$ to $t = 4.0 \, \text{s}$,..........

2011 Winter

Theory

CH23 - ELECTROMAGNETIC INDUCTION

(a) Use Fig. 3.2 to(i) state the evidence for the magnet to be undergoing free oscillations during the period $t = 0$ to $t = 4.0 \text{s},$.............

2011 Winter

Theory

CH23 - ELECTROMAGNETIC INDUCTION

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

2012 Winter

Theory

CH23 - ELECTROMAGNETIC INDUCTION

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

2012 Winter

MCQ

CH1 - PHYSICAL QUANTITIES & UNITS

Which quantity can be measured in electronvolts (eV)?

2014 Summer

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

MCQ

CH1 - PHYSICAL QUANTITIES & UNITS

What is the vertical component of this displacement vector?

2014 Summer

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

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

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

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

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

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

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