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ENERGY LEVELS
The energy levels, measured in electron volts (e.v.) in which orbiting electrons exist comply with a law of physics which states that energy can be given to electrons only in discrete amounts (quanta) which means that there are energy values that an electron cannot acquire. From this it can be deducted that there is a forbidden energy gap between each of the allowed energy bands K to O.
The width of the forbidden energy gap between the top of the valence band and the bottom of the conduction band determine the electrical conducting properties of materials.
What is the change in temperature of 2.2 kg of the following substances if 8.5 x 10 3 J of thermal energy is added to each of the substances? a. ice b. Water c. Alumi
Inductance is the circuit parameter to describe an inductor. It is an effect which results from the magnetic field that forms around a current carrying conductor. Inductance is sym
state the conditions under which two forces form a couple and give an example of couple
Description about mauls law
Chemical changes during: Discharging: The current will flow from positive to negative plate in the external circuit. As current now enters by negative plate, the negative
what is the formula of work done
Q. What is a capacitor? Define: capacitance. i) A capacitor is a apparatus for storing electric charges. ii) The capacitance of a conductor is defined like the ratio of the
The electric field strength, defined as a force per unit charge, has the units Newton per coulomb, N/C. The formula for electric potential difference, ΔV = Ed, though, suggest
A virtual image can be formed by one or more of the following single mirrors? Identify them. a) Plane mirror b) Concave spherical mirror c) Convex spherical mirror
what is thermal conductivity ?
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