Part 1: A single light bulb circuit 1) According to the electrical theory you ha

Question

Part 1: A single light bulb circuit

1) According to the electrical theory you have learned, the value of V-battery should be (greater than, equal to, less than) the value of V-resistor. Give a reasonable explanation for any difference below.

Part 2: Two light bulbs in a series circuit

1) The total resistance of a series circuit should be (greater than, equal to, less than) the resistance of one of the series resistors.

2) The total voltage across both of the series resistors should be ( greater than, equal to, less than) the voltage across one of the series resistors.

3) The total current flowing out of and back into the battery should be (greater than, equal to, less than) the current flowing through one of the resistors.

4) The total power provided by the battery should be (greater than, equal to, less than) the power dissipated by one of the series resistors.

5) The total power provided by the battery should be (greater than, equal to, less than) the power dissipated by both series resistors combined.

6) The predicted value of R-total is less than the measured value of R-total. Explain the difference.

7) The two series bulbs seem to be (brighter than, equally as bright as, dimmer than) the single bulb circuit in Part 1.

Part 3: Two light bulbs in a parallel circuit

1) The total resistance of a parallel circuit should be (greater than, equal to, less than) the resistance of one of the parallel resistors.

2) The total voltage across both of the parallel resistors should be (greater than, equal to, less than) the voltage across one of the parallel resistors.

3) The total current flowing out of and back into the battery should be (greater than, equal to, less than) the current flowing through one of the parallel resistors.

4) The total power provided by the battery should be (greater than, equal to, less than) the pwer dissipated by one of the parallel resistors.

5) The total pwer provided by the battery should be (greater than, equal to, less than) the power dissipated by both parallel resistors combined.

6) The predicted value of R-total is significantly less than the measured value of R-total. Explaing why.

7) The two parallel bulbs should be ( brighter than, equally as bright as, dimmer than) the single bulb circuit in Part 1.

8) The predicted value of I-total is signicantly greater than the calculated value of I-total. Explain why.

Part 4

1) Which arrangement of bulbs (part 2, part 3, both) has the largest total resistance?

2) Which arrangement of bulbs (part 2, part 3, both) has the largest total current?

3) Which arrangement of bulbs (part 2, part 3, both) has the same current through each resistor?

4) Which arrangement of bulbs (part 2, part 3, both) has the largest voltage on each bulb?

5) Which arrangement of bulbs (part 2, part 3, both) has the same voltage on each bulb?

6) Which arrangement of bulbs (part 2, part 3, both) consumes the most power?

7) Briefly explain your answer to 6 above.

Explanation / Answer

Part 1.1 equal to==>Vbattery+Vlight=0==>an example 12 Vbattery-12 Vlight=0

Part 2.1 greater than

Part 2.2 greater than

Part 2.3 equal to

Part 2.4 greater than

Part 2.5 equal to

Part 2.6 a 10 ohm resistor may not be exactly 10 ohms, the

more resistors the more error from predicted

Part 2.7 dimmer than

Part 3.1 less than

Part 3.2 equal to

Part 3.3 greater than

Part 3.4 greater than

Part 3.5 equal to

Part 3.6 refer to Part 2.6

Part 3.7 dimmer than

Part 3.8 refer to Part 2.6

Part 4.1 Part 2

Part 4.2 Part 3

Part 4.3 Part 2

Part 4.4 Part 2

Part 4.5 Part 3

Part 4.6 Part 3

Part 4.7 V^2/R; in a series circuir R is more, in a parallelcircuit R is less

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