OCR 2023 GCE Physics A H156/02: Depth in physics AS Level Question Paper & Mark Scheme (Merged)
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Course
MATH 225N
Institution
MATH 225N
OCR 2023 GCE Physics A H156/02:
Depth in physics AS Level Question
Paper & Mark Scheme (Merged)OCR 2023 GCE Physics A H156/02:
Depth in physics AS Level Question
Paper & Mark Scheme (Merged)OCR 2023 GCE Physics A H156/02:
Depth in physics AS Level Question
Paper & Mark Scheme (Merged)OCR 2023...
OCR 2023 GCE Physics A H156/02:
Depth in physics AS Level Question
Paper & Mark Scheme (Merged)
Resistivity - ANSWER-Is the resistance of a 1m length with a 1 m2 cross sectional area, measured in Ωm
Resistance as heat changes? - ANSWER-The resistance if a metal increases as the temperature increases
Semiconductors - ANSWER-If energy is supplied to a semi conductor more charge carriers are often
released
This makes them suitable for detecting changes in environment
Power - ANSWER-Work done / energy transferred per unit time
Current - ANSWER-The rate of flow of charge
A volt - ANSWER-Is the potential difference across a component when you convert 1 joule of energy
moving 1 coulomb of charge through the component
, 1V = 1J/C
Resistance - ANSWER-A component has a resistance of 1Ω if a potential difference of 1V makes a current
of 1A flow through it
Kilowatt-hour - ANSWER-A unit of energy equal to 3.6MJ or 1kW for 1h/AW
Ohms law - ANSWER-Voltage is directly proportional to current
As long as temperature and other physical conditions remain constant
The line goes through the origin
Kirchoff's first law - ANSWER-The sum if total current into a junction equals the sum of total current out
Conservation of charge
Kirchoff's second law - ANSWER-Sum of emfs = sum of voltages in a closed loop
Energy is conserved
Coulomb - ANSWER-A unit if charge equal to the quantity if electricity conveyed in one second by a
current of one amp
Potential difference - ANSWER-Energy converted from electrical energy to other forms per uni charge
Emf - ANSWER-Energy converted to electrical energy from other forms per unit charge
Progressive wave - ANSWER-Transfers energy without transferring material as a result of oscillations
Intensity - ANSWER-The rate of flow is energy per unit area at right angles to the direction if travel of the
wave W/m^2
Energy per unit area per unit time
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