Electric Circuit Study Guide

Electric Circuit Study Review

Name:______Date:______

Completion:

1) Name the three parts of a circuit:______

2) Voltage may be thought as electrical:______

3) Current take the path of least:______

4) What is the difference between AC and DC current:

5) Regular batteries produce this type of current:______

6) What is the relation ship between power and energy:

7) Which switch will make a complete circuit when closed?

8) Why will all of the lights in a strand of bulbs go out if one bulb is pulled out? Pictures may help…

9) How could you use a multi meter to see if a power supply is working?

10) How could a multimeter be used to see what bulb is broke when in a series circuit?

Circuits:

1) Draw a circuit diagram with a 3, 2.5, and10 connected in series:

A) Which resistor has the greatest voltage drop:______

B) Which resistor has the least amount of current passing through it:______

2) Draw a circuit diagram with a 3, 2.5, and10, connected in parallel:

A) Which resistor has the greatest voltage drop:______

B) Which resistor has the least amount of current passing through it:______

3) Draw a circuit diagram that has two resistors in series (22 and 18) that are connected to three resistors in parallel (3, 30, and 300).

A) Which resistors have the same current:______

B) Which resistor has the least amount of current:______

C) Which resistors have the most amount of current:______

D) Which resistors have the same voltage drop:______

E) Draw this circuit with an ammeter measuring the current across the 22 resistor and a voltmeter measuring the voltage drop across the 3 resistor.

Measuring resistance:

1 2 3 4

1) Find the resistance if:______

Line 1 – red

Line 2- orange

Line 3 – brown

Line 4- silver

2) Find the resistance if:______

Line 1 – yellow

Line 2- orange

Line 3 – yellow

Line 4- gold

3) Find the resistance if:______

Line 1 – green

Line 2- yellow

Line 3 – blue

Line 4- silver

Calculations:

1) If 20 volts is applied the parallel circuit, find the following:

a) The equivalent resistance: ans: .5ohms

b) The total current passing through the circuit: ans:40amps

c) The current passing through the 6 ohm resistor: ans: 3.33amps

d) The power emitted by the 6 ohm resistor: ans: 66.6 Watts

2) Find the following for the series circuit:

a) Equivalent resistance: ans: 15 ohms

b) The total current: ans: 2amps

c) The voltage drop across the 6 ohm resistor: ans: 12V

3) Find the following for the complex circuit:

a) equivalent resistance: ans: 15.4 Ohms

b) Total current:

c) Current passing through the 2nd 8 ohm resistor:

d) Current through the 100 ohm resiston:

4) Which light will go out when the following leads are touched and why: