Some of the answers (1 Viewer)

[study-freak]

Reliability in high school terms, is the consistency of the results. No matter how it was performed, valid or invalid, if the results are consistent, it is reliable. By saying whether to trust it or not comes under validity. An experiment may be reliable but not valid. What someth1ng wrote is correct and should get the mark.

+1
You (D94) may find it less confusing if you say 'reproducibility', rather than 'reliability'. These are interchangable terms.

To summarise:
accuracy is to do with bias
reliability is to do with variability in your data
validity is about whether your experiment actually does what it's set out to do

 

[lolcakes52]

OP (lolcakes) has fallen for a classic trap here in assuming that "theta1" is equal to "theta2" and hence the sin(theta) terms cancel out.

In fact theta2 = 30 degrees while theta1 (the angle between the current and the B field) is 90 degrees. So sorry OP but you got Q8 wrong.

Yeah, I see what your saying now. I'll change it.