Q4. Fig Q4 shows a Wheatstone bridge where Rx is an unknown resistor and Rs is a standard resistor with adjustable range

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Q4 Fig Q4 Shows A Wheatstone Bridge Where Rx Is An Unknown Resistor And Rs Is A Standard Resistor With Adjustable Range 1 (379.18 KiB) Viewed 43 times

Q4. Fig Q4 shows a Wheatstone bridge where Rx is an unknown resistor and Rs is a standard resistor with adjustable range from 200 2 to 10 kN. R, and R2 are standard resistors which may be selected from either 100 22 or 1 k 2. क/ Ri R2 E=10V A B Rx R Fig Q4 (5 marks) (a) With the aid of a diagram, show how you can protect the galvanometer from excessive current. (b) What is the resistance measurement range of the bridge? (c) What are the effects on the accuracy and sensitivity of the measurement if the supply voltage is increased to 12 V? (6 marks) (4 marks)