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

CH4 - DYNAMICS

What is a reasonable estimate of the volume of an adult person?

2021 Summer

MCQ

CH14 - WAVES

Which combination of units could be used for expressing the power dissipated in a resistor?

2021 Summer

MCQ

CH4 - DYNAMICS

A force of 10 N and a force of 5 N act on an object. The angle between the forces is 150°. The resultant force on the object can be resolved i...

2021 Summer

MCQ

CH14 - WAVES

A signal of frequency 25 Hz is displayed on the screen of a cathode-ray oscilloscope. What is the time-base setting? 

2021 Summer

MCQ

CH2 - MEASUREMENT TECHNIQUES

A micrometer screw gauge is used to measure the diameter of a wire.The reading on the micrometer with the jaws closed is ($-0.05 \pm 0.02$) mm.The rea...

2021 Summer

MCQ

CH3 - KINEMATICS

A projectile is launched at an angle to the horizontal at time $t = 0$. It travels over horizontal ground, as shown. Air resistance is negligible. ...

2021 Summer

MCQ

CH3 - KINEMATICS

A train, initially at rest at a station, has a uniform acceleration of $0.20 \, \text{m} \, \text{s}^{-2}$ until it reaches a speed of $20 \, \text{m}...

2021 Summer

MCQ

CH4 - DYNAMICS

A rocket is fired from the Earth into space. Newton’s third law of motion describes how forces act in pairs. One of the forces of a pair is the...

2021 Summer

MCQ

CH4 - DYNAMICS

The graph shows how quantity $P$ varies with quantity $Q$ for a body falling vertically downwards in a uniform gravitational field with air resistance...

2021 Summer

MCQ

CH4 - DYNAMICS

Which quantities are conserved in an inelastic collision?

2021 Summer