Alpha, beta and gamma emissions behave differently in electric field and magnetic field, depending on charge, mass and speed. In general, the charge of the particle will determine the direction of deflection, and the mass will affect how much deflection. In an electric field, due to laws of electrostatic (like charges repel, unlike charges attract) the charged particles of alpha and beta will be deflected in opposite direction. In a magnetic field, you can determine the direc

We are all familiar to applying FLHR to the current-carrying wire. But actually there is an equal and opposite force acting on the magnet too! Magnetic force is an action-reaction pair (Newton’s 3rd Law) View the video explanation What happens to the readings on the electronic balance when currents flow through the wire? https://youtu.be/6R32DsGNkic

Brightness of the filament bulb depends on power. The design of the filament is such that it uses tungsten (high resistivity), coil up (to increase the length) and thin tungsten filament (small cross-sectional area). These features are to let the tungsten filament achieve a certain amount of resistance, so that when current flows through, energy is transferred electrically to the internal (thermal) store of the filament, so that it is hot and the filament glow and gives out l

For Science Physics, you just need to the I-V graphs of ohmic conductor e.g fixed resistor and non-ohmic conductor e.g. filament bulb/lamp. For Pure Physics, all the 4 components are needed.

As the reference height is at B, so above that reference height is considered positive, and below the reference height it is considered negative. Hence the height-time graph is as such. Consider a vertical oscillating object, similar to the simple pendulum, the middle is the fastest.

To get a sharp image on the screen, there are various methods and concepts that you have learned and can be applied here. View the video for the explanation:

The diagram of circuit breaker may vary. So it is important that you analyse the structure of the circuit breaker in the diagram to understand how it works. The following are two examples of circuit breaker where the structures are different, but the basic working principles are the same. Video explanation part 01: 2022PPp2q10 2022PPp2q10 Suggested answers: Video explanation part 02: 2024PPp2q11 2024PPp2q11 Suggested answers:

Refer to the video below for the explanation. Related post: Velocity-time graph of ball released from rest with air resistance - Part 1...

Refer to the video below to understand how to sketch the graph. For O-Level, we just need to focus on the general shape. 2024PP Paper 2...

For such questions, it is useful to understand conservation of energy. Work done by the pushing force = GPE + KE + work done against...

Refer to the video for the explanation. When a ball is thrown up and it comes down, the motion varies. This video will cover how the...

Refer to the video below for the explanation. When a ball is dropped and it rebounces back, the motion varies. This video will cover how...