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

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

3

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

2

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

3

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

3

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

2

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

3

MCQ

CH3 - KINEMATICS

Which feature of a graph allows acceleration to be determined?

2012 Summer

3

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

3

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

3

MCQ

CH5 - FORCES, DENSITY & PRESSURE

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

2012 Summer

3