Two resistors, R1 = 26 Ohm and R2 = 6Ohm, are connected in parallel. You measure

Question

Two resistors, R1 = 26 Ohm and R2 = 6Ohm, are connected in parallel. You measured the current through R1 as I1 = 0.7A, what is the voltage across R2? Two resistors. R1 = 12 Ohm and R2 = 16 Ohm, are connected in series. You measured the current through R1 as I1 = 0.71 A, what is the voltage across R2? The 3 resistors in the circuit below have different resistance values. If you measure the voltage across each resistor, and notice that the voltage across R1 is the same as the voltage across R3, which of the following statement is true? The current through R1 is the same as the voltage through R3. R1 R3 For the circuit shown below, R1 = 10 Ohm, R2 = 15 Ohm, R3 = 20 Ohm. if the voltage V is doubled, how will the current through resistor R1 change? A. The current will decrease. B. The current will remain the same. C. The current will increase, but not double. D. The current will exactly double.

Explanation / Answer

Question 5

Concept : Voltage across resistors in parralel is same.

So we can say

Voltage across R2 = Voltage across R1

Given current through R1 =I1 =0.7 A

And R1 = 26 ohm

So voltage across R1 can be calculated using Ohm's law

Voltage across R1 = I1*R1 = 0.7 *26 =18.2 V

Hence Volage across R2 also =18.2 V

Question 6

Concept : In series current through each resistor is same.

So I2= I1 =0.71 A

Hence volatge across R2 = I2 *R2 = 0.71 * 16 =11.36 V

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