DC Power Supply Potential Difference (V) 2 Current (mA) 40 {R₁ A variable DC power supply and an ammeter is connected to

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Dc Power Supply Potential Difference V 2 Current Ma 40 R A Variable Dc Power Supply And An Ammeter Is Connected To 1 (74.38 KiB) Viewed 64 times

DC Power Supply Potential Difference (V) 2 Current (mA) 40 {R₁ A variable DC power supply and an ammeter is connected to a resistor circuit as shown above. Two resistors are known, but R₁ is unknown. In order to calculate the resistance of R₁ voltage and current data are recorded as the power supply voltage is increased from 2 V to 10 V. A table containing the data is shown below. R₂=5002 www 4 55 R₂ = 500 ww 12 V DC Power Supply 6 97 8 138 1. Plot the data using Excel or another data analysis program that can provide you with a curve fit. Be sure to label axes and perform a curve fit before taking a screen shot. 2. Calculate the total resistance of the circuit from your curve fit results. 3. Calculate the resistance of R₁. The power supply is now fixed at 12 V and one of the resistors is replaced by a capacitor as shown below. The power supply is now fixed at 12 V and one of the resistors is replaced by a capacitor as shown below.. {R₁ 10 155 R₂ = 50 2 www 4 nF 4. Calculate the current in the circuit immediately after the switch is closed. 5. Calculate the current in the circuit a long time after the switch has been closed. 6. Sketch the circuit, clearly identify junctions and loops you use. Also include clearly labled equations for each junction and loop you use. (Don't list all possibilities, only the ones you are going to use for the next part!) 7. Write a differential equation describing the circuit when the switch is closed in terms of charge. Use VB. R₁, R₂, C, and Q rather than numerical values.