tenth standard first lesson electricity unit plz answers i already asked many times if you need points see my questions answer there you get 80 plz answers these questions plz guys
Answers
Answer:
Hiii, here's ur answer
1. on cross sectional area, length, residtivity of conductor
2. Resistivity, electrical resistance of a conductor of unit cross-sectional area and unit length. A characteristic property of each material, resistivity is useful in comparing various materials on the basis of their ability to conduct electric currents. High resistivity designates poor conductors.
3.ohm-meter
4.good
5. Most electrical heating devices use alloys because they have high resistivity and the melting point is also high in them.
9. R = (R1 x R2) / (R1 + R2)
hey hope it helps. sorry for the diagrams
Answer:
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Resistance
Resistance is a measure of the opposition to current flow in an electrical circuit. Resistance is measured in ohms, symbolized by the Greek letter omega (Ω). Ohms are named after Georg Simon Ohm (1784-1854), a German physicist who studied the relationship between voltage, current and resistance.