Year 1 — Term 3
10 study notes · 139 practice questions · Aligned with NIE syllabus
Counted in the Idasara Academy app, which you open with a free account. The free notes, revision, practice and library pages for each lesson are linked below.
Lessons in This Term
Newton’s Law of Gravitation
Gravitational Force: A fundamental attractive force that exists between any two objects with mass. Every particle of matter in the universe attracts every other particle with a force that is directly proportional to the product of their masses and inversely proportional to the square of the distance between their centres.
Gravitational Field & Field Intensity
Gravitational Field: A region of space where a mass experiences a gravitational force. Any object with mass creates a gravitational field around itself.
Gravitational Potential & Potential Energy
Gravitational Potential (V): The work done per unit mass in bringing a small test mass from infinity to a point in the gravitational field.
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Create Free AccountOrbital Motion & Satellites
Earth's Gravitational Field Intensity: The gravitational field intensity at a point on or outside the Earth is the gravitational force per unit mass at that point, given by g = GM/r² where r is the distance from the centre of the Earth.
Escape Velocity & Energy of Orbits
Escape Velocity: The minimum speed required for an object to escape a planet's gravitational field without further propulsion.
Electric Charge & Coulomb’s Law
Electric Charge (Q): A fundamental property of matter that causes it to experience a force in an electric field.
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Create Free AccountElectric Field & Electric Field Intensity
Electrostatic Field and Force: An electrostatic field (also called electric field) is a region of space around a charged object where another charge experiences an electric force.
Electric Potential & Potential Energy
The electrostatic potential at a point in an electric field is defined as the work done in bringing a unit positive charge from infinity to that point without acceleration.
Electric Flux & Gauss’s Law
Electric Flux Model: Electric flux is a measure of the number of electric field lines passing through a given area, representing the flow of the electric field through that surface.
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Create Free AccountCapacitors & Capacitance
Capacitor: A device that stores electrical energy in an electric field. A capacitor consists of two conductors (plates) separated by an insulator (dielectric).