560=540
it means that you need 20 more Nm to balance the see-saw, the distance from te pivot is 2(holds it at the end) , 2*x=20, x=20/2, x=10N
for Oct/NOv
Q6 ciii> all circuit components and wires have an internal resistance but this resistance is small so we are not expected to find the value of that resistance untill our A-levels, however as an IG student you should know that there is some resistance in the connections as well as the components.
i have attached a diagram of the cicuit.