and for the question to determine the refractive index we should have said plot a graph of sin i on the y-axis against sin r on the x-axis and the gradient will be the refractive index
and for the question to determine the refractive index we should have said plot a graph of sin i on the y-axis against sin r on the x-axis and the gradient will be the refractive index
What was the answer for how the current can be kept constant? I wrote that a series circuit must be used with an ammeter to ensure that it is constant, but not sure about this answer.
i got my gradient as 5.7 and resistivity as 4.7*10-6 do you think my values will be in the range given?
Sadly I don't think so as most of the people wrote between 4.5 and 5 for gradient even below 4.5 I'm not sure but I don't think 5.7 is gonna cut it.For resistivity you might get method marks but the answer was 1.xx*10^-6 not anymore than a 1.
What was the answer for how the current can be kept constant? I wrote that a series circuit must be used with an ammeter to ensure that it is constant, but not sure about this answer.
I wrote variable resistor to keep the current constant
Sadly I don't think so as most of the people wrote between 4.5 and 5 for gradient even below 4.5 I'm not sure but I don't think 5.7 is gonna cut it.For resistivity you might get method marks but the answer was 1.xx*10^-6 not anymore than a 1.
What was the answer for how the current can be kept constant? I wrote that a series circuit must be used with an ammeter to ensure that it is constant, but not sure about this answer.
Umm.. with this way you could just read off the current and you won't MAKE it constant ryt ? What if the ammeter reading isn't constant :V I wrote that use a variable resistor