MCQ

CH19 - CURRENT OF ELECTRICITY

A cell is connected to a resistor.At any given moment, the potential difference across the cell is less than its electromotive force.Which statement e...

2009 Winter

MCQ

CH19 - CURRENT OF ELECTRICITY

Which values of current and resistance will produce a rate of energy transfer of 16 J\,s^{-1}?[Table_1]

2009 Winter

MCQ

CH19 - CURRENT OF ELECTRICITY

A cylindrical wire 4.0 m long has a resistance of 31 Ω and is made of metal of resistivity $1.0 \times 10^{-6} \, \Omega \mathrm{m}$.What is the radi...

2009 Winter

Theory

CH19 - CURRENT OF ELECTRICITY

A cell has electromotive force (e.m.f.) $E$ and internal resistance $r$. It is connected in series with a variable resistor $R$, as shown in Fig. 6.1....

2009 Winter

Theory

CH19 - CURRENT OF ELECTRICITY

(a) Two resistors, each of resistance $R$, are connected first in series and then in parallel. Show that the ratio $$\frac{\text{combined resistance...

2009 Winter

Theory

CH19 - CURRENT OF ELECTRICITY

A metal wire strain gauge is firmly fixed across a crack in a wall, as shown in Fig. 9.1, so that the growth of the crack may be monitored. Fig. 9.1(a...

2009 Winter

Theory

CH19 - CURRENT OF ELECTRICITY

The circuit of Fig. 10.1 may be used to indicate temperature change. The resistance of the thermistor T at 16°C is 2100Ω and at 18°C, the resista...

2009 Winter

MCQ

CH19 - CURRENT OF ELECTRICITY

In terms of energy transfer $W$ and charge $q$, what are the definitions of potential difference (p.d.) and electromotive force (e.m.f.)? [Table_1]

2010 Summer

MCQ

CH19 - CURRENT OF ELECTRICITY

What is the unit of resistivity?

2010 Summer

MCQ

CH19 - CURRENT OF ELECTRICITY

Which row describes the circumstances under which forces act on a charged particle in a uniform electric field? [Table_1]

2010 Summer

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