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 pair of quantities contains one vector and one scalar quantity?

2013 Summer

MCQ

CH1 - PHYSICAL QUANTITIES & UNITS

One property Q of a material is used to describe the behaviour of sound waves in the material. Q is defined as the pressure P of the sound wave divide...

2013 Summer

MCQ

CH3 - KINEMATICS

A cannon fires a cannonball with an initial speed $v$ at an angle $\alpha$ to the horizontal. Which equation is correct for the maximum height $H$ re...

2013 Summer

MCQ

CH1 - PHYSICAL QUANTITIES & UNITS

A wave has a frequency of 5 GHz. What is the period of the wave?

2013 Summer

MCQ

CH2 - MEASUREMENT TECHNIQUES

In an experiment to determine the acceleration of free fall $g$, the period of oscillation $T$ and length $l$ of a simple pendulum were measured. The ...

2013 Summer

MCQ

CH2 - MEASUREMENT TECHNIQUES

The Y-input terminals of a cathode-ray oscilloscope (c.r.o.) are connected to a supply of amplitude 5.0 V and frequency 50 Hz. The time-base is set at...

2013 Summer

MCQ

CH3 - KINEMATICS

A body is released from rest and falls vertically in air of constant density. Which statement about the motion of the falling body is correct?

2013 Summer

MCQ

CH3 - KINEMATICS

A goods train passes through a station at a steady speed of 10 m s$^{-1}$. An express train is at rest at the station. The express train leaves the st...

2013 Summer

MCQ

CH3 - KINEMATICS

A car is stationary at traffic lights. When the traffic lights go green, the driver presses down sharply on the accelerator. The resultant horizontal ...

2013 Summer

MCQ

CH4 - DYNAMICS

Which of the following is a statement of the principle of conservation of momentum?

2013 Summer