Effects of Current
Electric current, potential difference and electric current. Ohm's law; Resistance, Resistivity, Factors on which the resistance
of a conductor depends. Series combination of resistors, parallel combination of resistors and its applications in daily life.
Heating effect of electric current and its applications in daily life. Electric power, Interrelation between P, V, I and R.
Magnetic effects of current :
Magnetic field, field lines, field due to a current carrying conductor, field due to current carrying
coil or solenoid; Force on current carrying conductor, Fleming's Left Hand Rule. Electromagnetic induction. Induced potential
difference, Induced current. Fleming's Right Hand Rule, Direct current. Alternating current : frequency of AC. Advantage of
AC over DC. Domestic electric circuits.
Natural Resources (Sources of energy) :
Different forms of energy, conventional and non-conventional sources of energy: Fossil fuels, solar energy;
biogas; wind, water and tidal energy; Nuclear energy. Renewable versus non-renewable sources of Energy
Natural Phenomena
Reflection of light by curved surfaces;
Images formed by spherical mirrors, centre of curvature, principal axis, principal focus, focal
length, mirror formula (Derivation not required), magnification.
Refraction;
Laws of refraction, refractive index.
Refraction of light by spherical lens; Image formed by spherical lenses; Lens formula (Derivation not required); Magnification.
Power of a lens; Functioning of a lens in human eye, defects of vision and their corrections, applications of spherical mirrors and
lenses.
Refraction of light through a prism,
refraction through prism, dispersion of light, scattering of light, applications in daily life.
