OCR A physics
Physics
extremely detailed physics cards to the ocr a specification, would not recommend using if you do not have a few months till your exams, all the best!
Sample Data
| Front | What is magnetic flux |
| Back | Definition- The product of the magnetic flux density and the cross sectional area perpendicular to the direction of the magnetic flux density Magnetic flux is a quantity which signifies how much of a magnetic field passes perpendicularly through an area, It is at a maximum when the magnetic field lines are perpendicular to the coil area It is at a minimum when the magnetic field lines are parallel to the coil area |
| Front | Equation for escape velocity |
| Back | Use kinetic energy equations and gpe equation and rearrange for v.
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| Front | What are the functions of other components in a X-ray tube |
| Back | Metal target- When the electrons hit the target at high speed, they lose some of their kinetic energy, This is emitted as X-ray photons. A heat-resistant block of metal, usually tungsten, is embedded at the end of the anode, facing the cathode. This is the material that the electrons collide with and X-rays are generated in. High voltage power supply- Electrons accelerated to a high voltage so have a higher KE X-rays produced in all directions, so the tube is surrounded by lead shielding. This is to ensure the safety of the operators and recipients of the X-rays. An adjustable window allows a concentrated beam of X-rays to escape and be controlled safely |