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Kirchhoff's Circuit Rules - Homework Practice Problems | PHYS 204, Lab Reports of Physics

Material Type: Lab; Class: Physics II Laboratory; Subject: Physics; University: Northeastern Illinois University; Term: Unknown 1989;

Typology: Lab Reports

Pre 2010

Uploaded on 08/04/2009

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Name: Lab Partners:
Date:
Homework
Fundamentals of Circuits IV: Kirchoff’s Circuit Rules
1. Find the resistance equivalent to the network below. (All resistances are in Ohms.) Show
your work below.
20
8
10 10
20
20
30
10
2. Show on the circuit diagram in question 1 how you would connect a multimeter to measure
the voltage across the 8 Ohm resistor.
(a) Explain why the multimeter is connected this way.
(b) What design feature of a good multimeter allows you too connect it in the way
indicated without appreciably affecting the voltage across the 8 Ohm resistor?
3. Show on the circuit diagram in question 1 how you would connect a multimeter to measure
the current through the 8 Ohm resistor.
PHYS-204: Physics I I Laboratory 1
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Name: Lab Partners:

Date:

Homework

Fundamentals of Circuits IV: Kirchoff’s Circuit Rules

  1. Find the resistance equivalent to the network below. (All resistances are in Ohms.) Show your work below.
  1. Show on the circuit diagram in question 1 how you would connect a multimeter to measure the voltage across the 8 Ohm resistor.

(a) Explain why the multimeter is connected this way.

(b) What design feature of a good multimeter allows you too connect it in the way indicated without appreciably affecting the voltage across the 8 Ohm resistor?

  1. Show on the circuit diagram in question 1 how you would connect a multimeter to measure the current through the 8 Ohm resistor.

Homework: Fundamentals of Circuits IV: Kirchoff’s Circuit Rules v 0.

(a) Explain why the multimeter is connected this way.

(b) What design feature of a good multimeter allows you too connect it in the way indicated without appreciably affecting the current through the 8 Ohm resistor?

  1. The resistor and ideal 12V battery ,pictured inside the dashed box in the circuit below, represent a real battery with an emf of 12V and an internal resistance of r = 1 Ω. A is the positive terminal of the battery and B is the negative terminal.

S R = 15 Ω

E = 12 V (^) r = 1 Ω A B

(a) What is the potential difference across the battery’s terminals when switch S is open?

(b) What is the potential difference across the battery’s terminals when switch is closed?

  1. Determine the values and tolerances of resistors with the following color codes:

(a) red-red-brown-gold.

(b) violet-grey-blue

(c) Could the resistor in part (a) actually be as large as 240 Ω? Explain.