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

Which quantity can be measured in electronvolts (eV)?

2014 Summer

MCQ

CH1 - PHYSICAL QUANTITIES & UNITS

The unit of specific heat capacity is $\text{J kg}^{-1} \text{K}^{-1}$.What is its equivalent in terms of SI base units?

2014 Summer

MCQ

CH1 - PHYSICAL QUANTITIES & UNITS

What is the vertical component of this displacement vector?

2014 Summer

MCQ

CH2 - MEASUREMENT TECHNIQUES

The resistance of a lamp is calculated from the value of the potential difference (p.d.) across it and the value of the current passing through it.Whi...

2014 Summer

MCQ

CH2 - MEASUREMENT TECHNIQUES

The display on a cathode-ray oscilloscope shows the signal produced by an electronic circuit. The time-base is set at 5.0 ns per division and the Y-ga...

2014 Summer

MCQ

CH2 - MEASUREMENT TECHNIQUES

A digital caliper is used to measure the 28.50 mm width of a plastic ruler. The digital caliper reads to the nearest 0.01 mm. What is the correct way...

2014 Summer

MCQ

CH3 - KINEMATICS

An experiment is performed to measure the acceleration of free fall $g$. A body falls between two fixed points. The four measurements shown below are ...

2014 Summer

MCQ

CH3 - KINEMATICS

In a cathode-ray tube, an electron is accelerated uniformly in a straight line from a speed of $4 \times 10^{3} \: \text{ms}^{-1}$ to $2 \times 10^{7}...

2014 Summer

MCQ

CH3 - KINEMATICS

The graph shows how the speed $v$ of a sprinter changes with time $t$ during a 100 m race. What is the best estimate of the maximum acceleration of...

2014 Summer

MCQ

CH4 - DYNAMICS

A tennis ball is dropped onto a table and bounces back up. The table exerts a force F on the ball. Which graph best shows the variation with time t o...

2014 Summer