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

Theory

CH2 - MEASUREMENT TECHNIQUES

(a) State the most appropriate instrument, or instruments, for the measurement of the following. (i) the diameter of a wire of diameter about 1 mm [1...

2009 Summer

Theory

CH4 - DYNAMICS

A ball B of mass 1.2 kg travelling at constant velocity collides head-on with a stationary ball S of mass 3.6 kg, as shown in Fig. 2.1. Frictional ...

2009 Summer

Theory

CH5 - FORCES, DENSITY & PRESSURE

(a) Define the $\emph{torque}$ of a couple.   [2] (b) A torque wrench is a type of spanner for tightening a nut and bolt to a particular to...

2009 Summer

Theory

CH9 - DEFORMATION OF SOLIDS

A spring having spring constant $k$ hangs vertically from a fixed point. A load of weight $L$, when hung from the spring, causes an extension $e$. The...

2009 Summer

Theory

CH15 - SUPERPOSITION

Two sources $S_1$ and $S_2$ of sound are situated 80 cm apart in air, as shown in Fig. 5.1. The frequency of vibration can be varied. The two sourc...

2009 Summer

Theory

CH17 - ELECTRIC FIELDS

Two vertical parallel metal plates are situated 2.50 cm apart in a vacuum. The potential difference between the plates is 350V, as shown in Fig. 6.1.A...

2009 Summer

Theory

CH20 - D.C. CIRCUITS

A network of resistors, each of resistance $R$, is shown in Fig. 7.1.(a) Calculate the total resistance, in terms of $R$, between points(i) A and C,re...

2009 Summer

Theory

CH26 - PARTICLE & NUCLEAR PHYSICS

The spontaneous and random decay of a radioactive substance involves the emission of either $\alpha$-radiation or $\beta$-radiation and/or $\gamma$-ra...

2009 Summer

Theory

CH1 - PHYSICAL QUANTITIES & UNITS

In this experiment you will investigate how the current in a circuit depends on the arrangement of resistors within the circuit. You have been provide...

2009 Summer

Theory

CH1 - PHYSICAL QUANTITIES & UNITS

In this experiment you will investigate the angle of tilt of a bottle when it contains different amounts of water. (a) (i) Use the water supplied to ...

2009 Summer