Theory

CH19 - CURRENT OF ELECTRICITY

Lightning occurs when charge builds up in the atmosphere, creating a potential difference between the ground and the atmosphere. During a lightning s...

2024 Summer

4

Theory

CH19 - CURRENT OF ELECTRICITY

(a) State Kirchhoff’s second law.......................................................................................................................

2024 Summer

5

Theory

CH19 - CURRENT OF ELECTRICITY

(a) (i) State Kirchhoff’s second law...................................................................................................................

2024 Summer

8

Theory

CH19 - CURRENT OF ELECTRICITY

(a) State what is meant by the work done by a force......................................................................................................

2024 Winter

7

Theory

CH19 - CURRENT OF ELECTRICITY

(a) Define electric potential difference (p.d.). [1] (b) A power supply, three resistors and a component X are connected in the circuit shown The ...

2024 Winter

5

Theory

CH19 - CURRENT OF ELECTRICITY

(a) Define resistance. .................................................................................................................................

2024 Winter

6

MCQ

CH19 - CURRENT OF ELECTRICITY

What is the definition of potential difference across a component?

2024 Summer

5

MCQ

CH19 - CURRENT OF ELECTRICITY

The diagram shows a cell of negligible internal resistance connected to a switch and two resistors of resistances $R$ and $2R$.The circuit also contai...

2024 Summer

4

MCQ

CH19 - CURRENT OF ELECTRICITY

The $I-V$ characteristics for four components, A, B, C and D, are shown. Which component has the greatest resistance when the potential difference acr...

2024 Summer

4

MCQ

CH19 - CURRENT OF ELECTRICITY

A cylindrical wire has cross-sectional area $A$ and number density of free electrons $n$. The wire has current $I$ and the free electrons have average...

2024 Summer

3

MCQ

CH4 - DYNAMICS

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

2021 Summer

2

MCQ

CH14 - WAVES

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

2021 Summer

3

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

3

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

3

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

1

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

3

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

2

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

2

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

3

MCQ

CH4 - DYNAMICS

Which quantities are conserved in an inelastic collision?

2021 Summer

1