Q32 IB Physics HL Past Paper Solution May 2022 Paper 1 TZ 1 #ibdp #physics

Welcome to ZuAI - Ace Your IB Exams! In today's video, we’ll solve an interesting IB Physics problem that explores the forces on a charged sphere in a gravitational field and the effects of changing electric and magnetic fields. This problem is crucial for students studying both IB Physics HL and SL, as it covers fundamental concepts related to electric fields, magnetic fields, and acceleration.

Question Breakdown: We’re analyzing the situation where a charged sphere is stationary between two parallel metal plates with a potential difference V. The question asks which of the following changes will cause the charged sphere to accelerate:

Increasing the separation of the metal plates,
Increasing the potential difference V, and
Applying a magnetic field into the plane of the paper.
Solution:

Increasing the Separation of the Plates: This will decrease the electric field strength, which could potentially reduce the force on the charged sphere, depending on the setup.
Increasing the Potential Difference (V): This will increase the electric field strength between the plates, leading to a greater force on the charged sphere, causing it to accelerate.
Applying a Magnetic Field: The magnetic field will exert a force on the moving charge, according to the right-hand rule, leading to possible acceleration.
The correct answer is Option D: I, II, and III because all three changes can cause the charged sphere to accelerate in different ways.

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