For the circuit shown in the figure (? = 8.50 V, R = 9.00 ), calculate the follo

Question

For the circuit shown in the figure (? = 8.50 V, R = 9.00 ), calculate the following quantities.

For the circuit shown in the figure ( 8.50 V, R-9.00 ), calculate the following quantities. 12.0 V 4.00 2.00 (a) Calculate the current in the 2.00 resistor. (Enter the magnitude.) Enter a number differs significantly from the correct answer. Rework your solution from the beginning and check each step carefully. mA (b) Calculate the potential difference between points a and b. Need Help? 11 Talk to a Tutor

Explanation / Answer

= 8.50 V, R = 9.00
Using kirchoff Voltage & Current rule,
i1 = i2 + i3 -----1
i1*9.0 + i2 * 2.0 = 8.50 -----2
i1 * 9.0 + i3 * 4.0 - 12.0 = 9.0 -----3

Using eq 1, 2 & 3
i1 = 1.23 A
i2 = - 1.23 A
i3 = 2.49 A

Current in the 2.0 ohm resistor, I2 = 1.23 A

Potential Difference across A&B , I2*2.0 = 1.23 * 2.0 = 2.46 V
p.s potential at A is Higher than B

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