Week 7 – experiment 1 – build an electric circuit (lab)

 

Labs for College Physics: Mechanics Worksheet Lab 7.1-1

 

 

 

 

 

Build an Electric Circuit

 

 

 

 

 

As you work through the steps in the lab procedure, record your experimental values and the results

 

 

 

on this worksheet. Use the exact values you record for your data to make later calculations. Do not

 

 

 

enter negative numbers for voltage, current, or power even though you may have negative numbers

 

 

 

as a result of doing the experiment. Convert all negative values of voltage, current, and/or power

 

 

 

to positive values before entering data in the lab report. Do not include units in your answers.

 

 

 

 

 

Series Circuit { Data

 

 

 

 

 

Record your data for scenario 1 in the following table.

 

 

 

 

 

Table 1: Series Scenario 1 (Battery Voltage = 9 V)

 

 

 

Resistor Resistance Observed Current Observed Voltage Power

 

 

 

(ohms) (amps) (volts) (watts)

 

 

 

 

R1 3.0

 

R2 3.0

 

R3 3.0

 

 

 

 

 

 

Enter the total values for voltage and power.

 

 

 

 

 

Table 2

 

 

 

 

Rtotal 9.0 ohms

 

Vtotal volts

 

Ptotal watts

 

 

 

 

 

 

 

 

Labs for College Physics: Mechanics Worksheet Lab 7.1-2

 

 

 

Record your data for scenario 2 in the following table.

 

 

 

 

 

Table 3: Series Scenario 2 (Battery Voltage = 9 V)

 

 

 

Resistor Resistance Observed Current Observed Voltage Power

 

 

 

(ohms) (amps) (volts) (watts)

 

 

 

 

R1 3.0

 

R2 6.0

 

R3 9.0

 

 

 

 

 

 

Enter the total values for voltage and power.

 

 

 

 

 

Table 4

 

 

 

 

Rtotal 18.0 ohms

 

Vtotal volts

 

Ptotal watts

 

 

 

 

 

 

Parallel Circuit { Data

 

 

 

 

 

Record your data for scenario 1 in the following table.

 

 

 

 

 

Table 5: Parallel Scenario 1 (Battery Voltage = 9 V)

 

 

 

Resistor Resistance Observed Current Observed Voltage Power

 

 

 

(ohms) (amps) (volts) (watts)

 

 

 

 

R1 3.0

 

R2 3.0

 

R3 3.0

 

 

 

 

 

 

 

 

Labs for College Physics: Mechanics Worksheet Lab 7.1-3

 

 

 

Enter the total values for current and power.

 

 

 

 

 

Table 6

 

 

 

 

Rtotal 1.0 ohm

 

Itotal amps

 

Ptotal watts

 

 

 

 

 

 

Record your data for scenario 2 in the following table.

 

 

 

 

 

Table 7: Parallel Scenario 2 (Battery Voltage = 9 V)

 

 

 

Resistor Resistance Observed Current Observed Voltage Power

 

 

 

(ohms) (amps) (volts) (watts)

 

 

 

 

R1 3.0

 

R2 6.0

 

R3 9.0

 

 

 

 

 

 

Enter the total values for current and power.

 

 

 

 

 

Table 8

 

 

 

 

Rtotal 1.64 ohms

 

Itotal amps

 

Ptotal watts

 

 

 

 

 

 

 

Labs for College Physics: Mechanics Worksheet Lab 7.1-4

 

 

 

 

 

Questions

 

 

 

 

 

In the series scenario 1 circuit, the resistor that would feel the hottest to the touch is which of the

 

 

 

following?

 

 

 

 

. R1

 

. R2

 

. R3

 

. None, they are all the same.

 

 

 

 

 

 

In the series scenario 2 circuit, the resistor that would feel the hottest to the touch is which of the

 

 

 

following?

 

 

 

 

. R1

 

. R2

 

. R3

 

. None, they are all the same.

 

 

 

 

 

 

The phenomenon that is responsible for the resistor feeling hot is called

 

 

 

.

 

 

 

In the parallel scenario 1 circuit, the resistor that would feel the hottest to the touch is which of

 

 

 

the following?

 

 

 

 

. R1

 

. R2

 

. R3

 

. None, they are all the same.

 

 

 

 

 

 

In the parallel scenario 2 circuit, the resistor that would feel the hottest to the touch is which of

 

 

 

the following?

 

 

 

 

. R1

 

. R2

 

. R3

 

. None, they are all the same.

 

 

 

 

 

 

 

 

Labs for College Physics: Mechanics Worksheet Lab 7.1-5

 

 

 

If we placed a 6-amp fuse in any of the four circuits you tested, the fuse would fail in

 

 

 

.

 

 

 

 

 

 

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