Question

http://papers.xtremepapers.com/CIE/Cambridge%20International%20A%20and%20AS%20Level/Physics%20(9702)/9702_s11_qp_21.pdf Question 5 - part b

Answer 1

The minimum current through the ammeter is zero amps and the maximum is 2 amps.

Answer 2

how did u get the max current?

Answer 3

Did you just post up your exam? Lol.

Answer 4

The maximum possible current occurs when the moving contact of the variable resistor is at the extreme right of its travel. Then the 6 ohm resistor and the ammeter are connected in series directly across the 12V battery.
\[I=\frac{V}{R}=\frac{12}{6}\ A\]

Answer 5

hahaha abb0t^