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

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. ...

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 unit is not an SI base unit?

2023 Summer

3

MCQ

CH2 - MEASUREMENT TECHNIQUES

What is the best estimate of the number of atoms in a piece of metal of volume 50 cm$^3$?

2023 Summer

3

MCQ

CH2 - MEASUREMENT TECHNIQUES

A copper pipe has a true diameter of 42.03 mm.A builder measures the diameter of the pipe five times using digital calipers. The measurements are show...

2023 Summer

3

MCQ

CH3 - KINEMATICS

Two forces, each of 10 N, act at a point P, as shown. The angle between the directions of the forces is 120°. What is the magnitude of the result...

2023 Summer

2

MCQ

CH3 - KINEMATICS

One object moves directly from P to R. In a shorter time, a second object moves from P to Q to R. Which statement about the two objects is correct...

2023 Summer

3

MCQ

CH3 - KINEMATICS

A ball is kicked so that it has an initial velocity of 12 m s⁻¹ at an angle of 50° to horizontal ground. Assume that air resistance is neg...

2023 Summer

2

MCQ

CH4 - DYNAMICS

A camera drone of mass 1.20 kg hovers at a fixed point above the ground. The drone has four propellers. In a time of 1.00 s, each propeller pushes ...

2023 Summer

2

MCQ

CH4 - DYNAMICS

A box rests on the Earth, as shown. Newton’s third law describes how forces of the same type act in pairs. One of the forces of a pair is the w...

2023 Summer

3

MCQ

CH5 - FORCES, DENSITY & PRESSURE

A small ball is held at the surface of liquid oil in a container. The ball is released from rest and falls through the oil. The ball has velocity $v$....

2023 Summer

3

MCQ

CH4 - DYNAMICS

An object of mass $m$, moving at speed $u$ along a frictionless horizontal surface, collides head-on with a stationary object of mass $4m$. After t...

2023 Summer

2