Question

Consider two circuits with resistors in series and in parallel. In each case the applied voltage is 12 V and the current is 12 mA. a. What is the value of each resistor when they are in series assuming R1 = R2 = R3? b. What is the value of each resistor when they are parallel assuming R1 = R2 = R3?

          Consider two circuits with resistors in series and in parallel. In each case the applied voltage is 12 V and the current is 12 mA. a. What is the value of each resistor when they are in series assuming R1 = R2 = R3? b. What is the value of each resistor when they are parallel assuming R1 = R2 = R3?
        
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University Physics with Modern Physics
University Physics with Modern Physics
Hugh D. Young 14th Edition
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Consider two circuits with resistors in series and in parallel. In each case the applied voltage is 12 V and the current is 12 mA. a. What is the value of each resistor when they are in series assuming R1 = R2 = R3? b. What is the value of each resistor when they are parallel assuming R1 = R2 = R3?
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Transcript

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00:01 In our question, we are given three resistors, r1, r2 and r3 which are connected to a source of terminal voltage v of magnitude 6 volts.
00:11 We need to find the current that would pass through each resistor and the voltage across if they are connected a in series and secondly in parallel circuit.
00:25 Consider the first case of series circuit.
00:27 Now we are given the values of each resistor to be r1, 2 oom, r2 of 4 oom, and r3 resistor of 8 oom.
00:39 The terminal voltage of magnitude 6 volts.
00:42 Now in series, the current passing through the circuit will be given as terminal voltage divided by the equivalent resistance of the circuit.
00:51 Now given the equivalent resistance having in series circuit will be given as the sum of the resistors r1, r2 and r3 by v.
01:03 Substitute in the values, 6 volts divided by 2 plus 4 plus 8m, which gives us the current to be equal to 0 .4286 ampere...
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