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

MCQ

CH20 - D.C. CIRCUITS

Each of Kirchhoff's two laws presumes that some quantity is conserved. Which row states Kirchhoff's first law and names the quantity that is conserve...

2009 Winter

MCQ

CH20 - D.C. CIRCUITS

The diagram shows the symbol for a wire carrying a current $I$. What does this current represent?

2009 Winter

MCQ

CH20 - D.C. CIRCUITS

A potential divider consisting of resistors of resistance $R_1$ and $R_2$ is connected to an input potential difference of $V_0$ and gives an output p...

2009 Winter

MCQ

CH20 - D.C. CIRCUITS

A network of resistors consists of two 3.0\Omega resistors and three 6.0\Omega resistors.What is the combined resistance of this network between point...

2009 Winter

MCQ

CH20 - D.C. CIRCUITS

The resistance of a thermistor depends on its temperature, and the resistance of a light-dependent resistor (LDR) depends on the illumination.Under wh...

2010 Summer

MCQ

CH20 - D.C. CIRCUITS

The resistors P, Q, and R in the circuit have equal resistance.The battery, of negligible internal resistance, supplies a total power of 12W.What is t...

2010 Summer

MCQ

CH20 - D.C. CIRCUITS

In deriving a formula for the combined resistance of three different resistors in series, Kirchhoff’s laws are used. Which physics principle is invo...

2010 Summer

MCQ

CH20 - D.C. CIRCUITS

A source of e.m.f. of 9.0 mV has an internal resistance of 6.0 Ω. It is connected across a galvanometer of resistance 30 Ω. What will be the current...

2010 Summer

MCQ

CH20 - D.C. CIRCUITS

In each arrangement of resistors, the ammeter has a resistance of 2\(\Omega\).Which arrangement gives the largest reading on the ammeter when the same...

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