1.

Define the followings?(a) 1 ohn (b) 1 watt (c) lampere (d) 1 volt.

Answer»

a. 1ohmis the unit of resistance . It is equal to 1 volt upon 1 ampere. It means that an object having a resistance of1ohmallows 1 ampere of current to flow through 2 points having potential difference of 1 volt.

b. The watt (symbol: W) is a unit of power. In the International System of Units (SI) it isdefinedas a derived unit of 1 joule per second, and is used to quantify the rate of energy transfer.

c. 1 ampereisdefinedas the constant current which, if maintained in two straight parallel conductors of infinite length, of negligible circular cross-section, and placed 1 metre apart in vacuum, would produce between these conductors a force equal to 2 10 to the power -7 newton per metre of length.

d.One volt isdefinedas energy consumption of one joule per electric charge of one coulomb. 1V = 1J/C. One volt is equal to current of 1 amp times resistance of 1 ohm. 1V = 1A * 1Ω



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