I've been having problems on the units, I don't know 1mW=( )Vs, or 1V=( )mW, can anyone give me the right answer?, can anyone help me?
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KIWIYUM,
IT IS OF PRIMRY IMPORTANCE TO UNDERSTAND UNITS. Understand that 2kilo grams is not equatable to 2 litres. One speaks of weight and other of volume. They are related by "specific gravity". For water it is 1, and 2 litres of water weighs 2 kilograms. For oil, it is lesser. For mercury it is very different. 2 litres of mercury will weigh about 27kg.
So is it with watts and voltage. Watt refers to V^2/R for dc. If you have 1 volt across 1 ohm, current is V?R = I and is 1 amp. Wattage is V^2/R and also = VI and is 1 watt. If resistor is 2 ohms, I is 0.5 amps, and power = .5watts.
MLT are basic units and T is time. You cannot equate M to L or to T, time.
So internalise this> Watt cannot be equated to volts. It so happens that 1mW is 1W/1000 while 1mV is 1V/ 1000. Milli, micro etc are just convenient in speaking of small quantities, be it voltage, watts, or volume. You take mdeicines in millilitres, not in litres!
IT IS OF PRIMRY IMPORTANCE TO UNDERSTAND UNITS. Understand that 2kilo grams is not equatable to 2 litres. One speaks of weight and other of volume. They are related by "specific gravity". For water it is 1, and 2 litres of water weighs 2 kilograms. For oil, it is lesser. For mercury it is very different. 2 litres of mercury will weigh about 27kg.
So is it with watts and voltage. Watt refers to V^2/R for dc. If you have 1 volt across 1 ohm, current is V?R = I and is 1 amp. Wattage is V^2/R and also = VI and is 1 watt. If resistor is 2 ohms, I is 0.5 amps, and power = .5watts.
MLT are basic units and T is time. You cannot equate M to L or to T, time.
So internalise this> Watt cannot be equated to volts. It so happens that 1mW is 1W/1000 while 1mV is 1V/ 1000. Milli, micro etc are just convenient in speaking of small quantities, be it voltage, watts, or volume. You take mdeicines in millilitres, not in litres!
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Volts and mw are completely different units.