![]() It is denoted by the symbol 'ρ' (rho) and its unit is ohm-meter (Ω.m). Resistivity is a property of a material that quantifies its resistance to the flow of electric current. Where R is the resistance, ρ (rho) is the resistivity of the material, L is the length of the conductor, and A is the cross-sectional area of the conductor. The resistance of a conductor can be calculated using the formula: R = ρ (L/A) The resistance of a conductor depends on its length, cross-sectional area, and the material it is made of. It is denoted by the symbol 'R' and its unit is ohm (Ω). Resistance is a property of a conductor that determines the amount of current flowing through it for a given potential difference. ![]() Where V is the potential difference, I is the current, and R is the resistance of the conductor. Mathematically, Ohm's Law can be expressed as: V = IR ![]() Ohm's Law states that the current flowing through a conductor is directly proportional to the potential difference across its ends, provided the physical conditions such as temperature and material remain constant. The drift velocity is the average velocity of charged particles in a particular direction due to an applied electric field. Electric current is related to the drift velocity of charge carriers in a conductor. It is denoted by the symbol 'I' and its unit is ampere (A). Electric current is the rate of flow of electric charge in a conductor.
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