## Description

Objective: To demonstrate that the circuit analysis techniques used for DC resistive circuits also work for AC resistive circuits.

- Select a 1 kâ„¦ resistor and a 470 â„¦ resistor, to be designated RI and R2 respectively. Use the DMM to measure the actual resistance of these two resistors, and record their values below.

R_{1 }=____________________________{, }R_{2 }= _____________________________

- For the circuit shown in Figure 1, use the measured values of the two resistances to calculate total resistance R
_{T}, the current I, and the voltage drops across the two resistors, VR_{1}and VR_{2}and record below.

Figure1

R_{T}=_________________, I =_____________, V_{R1 }=_____________,V_{R2}=_______________

- Construct the circuit of Figure 1, and use the DMM to measure the current and the voltage across each resistor, and record below.

I =_____________, V_{R1} =_____________, V_{R2}=_______________

- Replace the DC supply with the function generator, set at 5 V
_{rms}and 10 kHz with Hi Z output, repeat the measurements of Step 3, and record below.

I =_____________, V_{R1 }=_____________, V_{R2}=_______________ (rms all)

- Observe the voltage drops across each resistor using the DMM. What are their peak values?

V_{R1} =_____________, V_{R2}=_______________(peak)

- For the circuit shown in Figure 2, use the measured values of the two resistances to calculate total resistance R
_{T}, the supply current I_{s}, the currents through the two resistors, I_{1}and I_{2}, and the voltage drops across the two resistors, V_{RI}and V_{R2}, and record below.

Figure 2

Calculations:

R_{T }=_________________ , I_{SÂ }= _________________ , I_{1} = _______________, I_{2} =___________________

V_{R1} =____________________, V_{R2 }= ___________________

- Construct the circuit of Figure 2, and use the DMM to measure the supply current, the currents through each resistor, and the voltage across each resistor. and record below.

I_{S} = _________________, I_{1 }= _______________, I_{2} =___________________

V_{R1} =____________________, V_{R2} = ___________________

- Replace the DC supply with the function generator, Set at 5 V
_{rms }and 10 kHz with Hi Z output, repeat the measurements of Step 3 , and record below.

I_{S} = _________________, I_{1} = _______________, I_{2} =___________________

V_{R1} =____________________, V_{R2} = _________________ __ (rms all)

- Observe the voltage drops across each resistor using the DMM. What are their peak values?

V_{R1} =____________________, V_{R2} = _________________ (peak)

Do your results With the AC supply (function generator) agree With your DC results? Do they

with your calculated values?