Physics - A Level Notes

X-ray Production X-rays are produced when charged particles are rapidly decelerated or accelerated and their kinetic energy is transformed into

Balanced Equation In α decay, the nucleon number decreases by 4; proton number decreases by 2. In β– decay, the

Photons The Photon Model Electromagnetic radiation travels through space as a continuous wave, with properties such as diffraction and interference

Sinusoidal Current A sinusoidal alternating current is represented by; I = I0 sinωt where I0 is the peak value The

Electromagnetic Induction The induced current or e.m.f. can be induced across the ends of the conducting wire in two ways:

The direction of conventional electric current is the direction of flow of positive charge. When the electrons are moving, the

Magnetic FieldsA force field in which a magnet, a wire carrying current or a moving charge experience a force is

Operational AmplifierAn amplifier is a device which increases the signal strength of an analogue signal input. An operational amplifier (op-amp)

Capacitor A capacitor is an electronic component that can store electrical charge and then release it. It is made by

Coulomb’s LawFor any point outside a spherical conductor, the charge on the sphere may be considered to act as a

A-level Note