In your physics lab, you are given a hand generator and an assortment of wires w
ID: 1429903 • Letter: I
Question
In your physics lab, you are given a hand generator and an assortment of wires with different values of resistance. You connect the leads of the generator across each wire in turn, and in each case attempt to turn the generator handle at the same constant rate. You find that you must push harder on the handle when the leads of the generator are connected. across the wire with the lowest resistance to any wire since it makes no difference as long as the handle is turned at the same constant rate across the wire with the highest resistance. This is because turning the handle at a given constant rate produces,regardless of what is connected to the leads. a constant current through the leads a constant voltage across the leads a constant output of electrical power So, when turning the handle at a constant rate, you must push harder in cases where there is a greater voltage across the connected wire a greater current through the connected wire none of these, because the work is constant in all casesExplanation / Answer
the generator works like a dynamo,the mechanical energy to rotate the handle is independent of resistnce in the circuite.so,second option is correct.
according to law of conservation of energy the mechanical power input is equal to electrical power output.so,the third option is correct.
non of those,third option is correct.