Answer: Option C

Answer: Option D We can use Fleming’s Left Hand Rule to determine the direction of the force on the current carrying wire. The real reason is due to the combined magnetic fields of the current carrying wire and magnets (as shown in the diagram). The resultant magnetic field creates an uneven magnetic field around the wire. The direction of the force on the wire is in the direction from strong magnetic field towards the weak magnetic field region.

Answer: Option D Think of the lovers analogy. When both currents are in the same direction, it’s like couple in love, so attraction. Likewise, when the currents are in opposite direction, they quarrel, hence repulsion. On the magnitude of the force, always remember for electric force, magnetic force or gravitational force between objects, the forces are equal and opposite, action-reaction pair (Newton’s 3rd Law).

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

Answer: Option B View 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:

Answer: Option D We always use FLHR to find the force on the wire. But magnetic forces is a action-reaction pair. So when the force...

Flemeng's Left Hand Rule, using your left hand, with the thumb, 1st finger and 2nd finger all 90 degrees to one another. This is covered...

When a current flows through a wire, magnetic field is produced around the wire. This magnetic field can be detected using a compass....