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

What is a reasonable estimate of the mass of a raindrop?

2020 Summer

MCQ

CH2 - MEASUREMENT TECHNIQUES

Which quantity is a scalar?

2020 Summer

MCQ

CH2 - MEASUREMENT TECHNIQUES

A galvanometer of resistance 5\(\Omega\) is to be used in a null method.In order to protect the galvanometer from damage due to an excessive initial c...

2020 Summer

MCQ

CH2 - MEASUREMENT TECHNIQUES

Readings are made of the current $I$ for different voltages $V$ across a fixed resistor. The results are plotted on a graph to show the variation of $...

2020 Summer

MCQ

CH3 - KINEMATICS

A stone is dropped from a height of 20 m above water. The graph shows the variation with time of the velocity of the stone. Which statement describ...

2020 Summer

MCQ

CH3 - KINEMATICS

A car X is travelling at a constant speed $u$ along a straight road. At time $t = 0$ a second car Y is a distance $d_0$ behind car X and travelling at...

2020 Summer

MCQ

CH4 - DYNAMICS

The resultant force acting on an object is slowly increased. Which graph could show the variation with time $t$ of the momentum $p$ of the object?&nb...

2020 Summer

MCQ

CH4 - DYNAMICS

An astronaut has a weight of 660 N when she is standing on the Earth's surface. The acceleration of free fall on the surface of Mars is $3.71 \, \tex...

2020 Summer

MCQ

CH4 - DYNAMICS

A mass $m_1$ travelling with speed $u_1$ collides with a mass $m_2$ travelling with speed $u_2$ in the same direction. After the collision, mass $m_1$...

2020 Summer

MCQ

CH4 - DYNAMICS

The diagrams show a negative electric charge situated in a uniform electric field and a mass situated in a uniform gravitational field. Which row s...

2020 Summer