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

MCQ

CH1 - PHYSICAL QUANTITIES & UNITS

The SI unit for potential difference (the volt) is given, in base units, by

2010 Summer

MCQ

CH1 - PHYSICAL QUANTITIES & UNITS

The product of pressure and volume has the same SI base units as

2010 Summer

MCQ

CH1 - PHYSICAL QUANTITIES & UNITS

An ion is accelerated by a series of electrodes in a vacuum. A graph of the power supplied to the ion is plotted against time.What is represented by t...

2010 Summer

MCQ

CH1 - PHYSICAL QUANTITIES & UNITS

A vector quantity $V$ is resolved into two perpendicular components $X$ and $Y$. The angle between $V$ and component $X$ is $\theta$. The angle betwee...

2010 Summer

MCQ

CH3 - KINEMATICS

The diagram shows a velocity-time graph for a vehicle. The vehicle, moving at 4.0 ms-1, begins to accelerate at time = 0. What is the vehicle's ac...

2010 Summer

MCQ

CH3 - KINEMATICS

A small steel ball falls freely under gravity after being released from rest. Which graph best represents the variation of the height $h$ of the ball...

2010 Summer

MCQ

CH4 - DYNAMICS

Two equal masses travel towards each other on a frictionless air track at speeds of $60 \text{ cm s}^{-1}$ and $40 \text{ cm s}^{-1}$. They stick toge...

2010 Summer

MCQ

CH4 - DYNAMICS

A brick weighing 20 N rests on an inclined plane. The weight of the brick has a component of 10 N parallel with the plane. The brick also experiences ...

2010 Summer

MCQ

CH4 - DYNAMICS

The diagram shows two identical spheres X and Y. Initially, X moves with speed v directly towards Y. Y is stationary. The spheres collide elastical...

2010 Summer

MCQ

CH5 - FORCES, DENSITY & PRESSURE

Forces of 3 N, 4 N and 5 N act at one point on an object. The angles at which the forces act can vary. What is the value of the minimum resultant for...

2010 Summer