Answer on Other Physics Question for na
10 In an experiment to determine the relationship between the current I through a piece of tungsten wire and the potential difference V across it, the theoretical relationship used was
, where k and n are constants which may be obtained from a straight line graph of the form y = mx + c, the symbols having their usual meaning. The corresponding linear equation for this experiment is ----------
I = nV + k
logI = nlogV + logk
11 A current of 0.5A flowing through a wire produces 21J of heat in 1/2 min. The resistance of the wire is ----------- ohms to 1 place of decimal
12 Which of the following is not true about internal resistance.
It is the opposition to the flow of current within a battery
It is equal to emf
Internal resistance is not the same as voltage
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