A special arrangement of Wheatstone bridge is displayed in the circuit below where R = 1, R = 1n and Ry is 10. When the variable resistance is adjusted to a R = 99 the current through the ammeter becomes zero. 10. What is the value of resistance R in units of 2? 9 (b) 0 (c) 4.5 (d) 1 (e) 18 11. The resistance of the variable resistor can be read with an uncertainty of 0.10. What is the uncertainty in R in units of ? (a) .2 (b) 0.5 (c) 0.1 (d) +0.01 (e) 1 R R R R ww R