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

When a force $F$ moves its point of application through a displacement $s$ in the direction of the force, the work $W$ done by the force is given by $...

2012 Summer

MCQ

CH1 - PHYSICAL QUANTITIES & UNITS

What is a possible unit for the product $VI$, where $V$ is the potential difference across a resistor and $I$ is the current through the same resistor...

2012 Summer

MCQ

CH1 - PHYSICAL QUANTITIES & UNITS

What is a reasonable estimate of the average kinetic energy of an athlete during a 100 m race that takes 10 s?

2012 Summer

MCQ

CH2 - MEASUREMENT TECHNIQUES

A light-meter measures the intensity $I$ of the light falling on it. Theory suggests that $I$ varies inversely as the square of the distance $d$. W...

2012 Summer

MCQ

CH2 - MEASUREMENT TECHNIQUES

In an experiment, a radio-controlled car takes $2.50 \pm 0.05$ s to travel $40.0 \pm 0.1$ m. What is the car’s average speed and the uncertaint...

2012 Summer

MCQ

CH3 - KINEMATICS

In an experiment to determine the acceleration of free fall using a falling body, what would lead to a value that is too large?

2012 Summer

MCQ

CH3 - KINEMATICS

Which feature of a graph allows acceleration to be determined?

2012 Summer

MCQ

CH3 - KINEMATICS

The diagram shows a laboratory experiment in which a feather falls from rest in a long evacuated vertical tube of length $L$. The feather takes tim...

2012 Summer

MCQ

CH3 - KINEMATICS

In the absence of air resistance, a stone is thrown from P and follows a parabolic path in which the highest point reached is T. The stone reaches poi...

2012 Summer

MCQ

CH5 - FORCES, DENSITY & PRESSURE

Each option gives a correct word equation involving force. Which option gives the definition of force?

2012 Summer