Theory

CH18 - CAPACITANCE

(a) (i) State what is meant by rectification of an alternating voltage...................................................................................

2024 Winter

4

Theory

CH18 - CAPACITANCE

(a) Define the capacitance of a parallel-plate capacitor. ...............................................................................................

2024 Winter

5

Theory

CH18 - CAPACITANCE

(a) (i) State what is meant by rectification of an alternating voltage...................................................................................

2024 Winter

4

Theory

CH18 - CAPACITANCE

Fig. 6.1 shows a capacitor of capacitance C connected in series with a resistor of resistance R.Initially the switch is open and there is a p.d. of 12...

2024 Summer

4

Theory

CH18 - CAPACITANCE

(a) Two capacitors X and Y are connected in series to a power supply of voltage V, as shown in Fig. 6.1. The capacitance of X is $C_X$ and the capacit...

2024 Summer

5

Theory

CH18 - CAPACITANCE

Fig. 6.1 shows a capacitor of capacitance $C$ connected in series with a resistor of resistance $R$. Initially the switch is open and there is a p.d. ...

2024 Summer

5

Theory

CH18 - CAPACITANCE

Two capacitors A and B are connected into the circuit shown in Fig. 5.1. Capacitor A has capacitance C and capacitor B has capacitance 3C. The electro...

2023 Summer

6

Theory

CH18 - CAPACITANCE

A capacitor C is charged so that the potential difference (p.d.) V across its terminals is 8.0 V. The capacitor is connected into the circuit of Fig. ...

2023 Winter

5

Theory

CH18 - CAPACITANCE

Part of an electric circuit is shown in Fig. 5.1.The circuit is used to produce half-wave rectification of an alternating voltage of potential differe...

2023 Summer

5

Theory

CH18 - CAPACITANCE

A capacitor of capacitance 470 \mu F is connected to a battery of electromotive force (e.m.f.) 24 V in the circuit of Fig. 5.1. The two-way switch S i...

2022 Winter

3

MCQ

CH1 - PHYSICAL QUANTITIES & UNITS

Which quantity with its unit is correct?

2016 Summer

2

MCQ

CH1 - PHYSICAL QUANTITIES & UNITS

The luminosity $L$ of a star is given by $L = 4\pi r^2 \sigma T^4$ where $r$ is the radius of the star, $T$ is the temperature of the star, $\sig...

2016 Summer

3

MCQ

CH1 - PHYSICAL QUANTITIES & UNITS

The diagram shows two vectors X and Y, drawn to scale. If X = Y − Z, which diagram best represents the vector Z?

2016 Summer

3

MCQ

CH2 - MEASUREMENT TECHNIQUES

The diagram shows a cathode-ray oscilloscope (c.r.o.) being used to measure the rate of rotation of a flywheel.The flywheel has a small magnet M mount...

2016 Summer

2

MCQ

CH2 - MEASUREMENT TECHNIQUES

A student determines the density $\rho$ of steel by taking measurements from a steel wire. mass $m = 6.2 \pm 0.1 \text{ g}$ length $l = 25.0 \pm 0.1 \...

2016 Summer

3

MCQ

CH3 - KINEMATICS

The acceleration of free fall on the Moon is $1.6 \, \text{m}\,\text{s}^{-2}$. The Moon has no atmosphere. An astronaut standing on the surface of the...

2016 Summer

2

MCQ

CH3 - KINEMATICS

A tennis ball is released from rest at the top of a tall building. Which graph best represents the variation with time $t$ of the acceleration $a$ of ...

2016 Summer

3

MCQ

CH3 - KINEMATICS

The graph shows how the velocity $v$ of an object moving in a straight line varies with time $t$ from $t = 0$ to $t = T$. Which graph represents th...

2016 Summer

3

MCQ

CH4 - DYNAMICS

A ball falls vertically onto horizontal ground and rebounds, as shown. The ball has momentum $p_1$ downwards just before hitting the ground. After ...

2016 Summer

3

MCQ

CH4 - DYNAMICS

A sphere falls from rest through the air. The graph shows the variation with time of the sphere’s velocity. Which diagram shows the forces ac...

2016 Summer

3