Question

The resistors R1, R2, R3 and R4 in the figure given below are all equal in value.
What would you expect the voltmeter A, B and C to read assuming that the connecting wires in the circuit have negligible resistance?; The resistors R1, R2, R3 and R4 in the figure given below are all equal in value.
What would you expect the voltmeter A, B and C to read assuming that the connecting wires in the circuit have negligible resistance?

Answer 1

Explanation:

= R + R + R + R = 4R ohm

Total current in the circuit, I = V/R = 12/4R = 3/R

Reading of voltmeter A = Voltage across R1 = I x R1 = 3/R x R = 3V

Reading of voltmeter B= Voltage across R2 = I x R2 = 3/R x R = 3V

Reading of voltmeter C= Voltage across the series combination of R3 and R4 = I x (R3+R4) = 3/R x 2R = 6V

Answer 2

Explanation:

The p.d i.e potential difference is 12 V across all of the $R_1, R_2, R_3, and R_4$resistors.

Since the resistors all have the same value, that p.d is precisely half the combination, i.e The voltage indicated in voltmeter C is 6 V. Similarly, the p.d indicated by the voltmeter A and B is one-fourth the p.d across all the resistors.  Hence,  A and B will have a 3 V .

You can get all the answers of Chapter 1 in the link below:    

https://brainly.in/question/14961133

   

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