Analyzing Circuits

​The following notes correspond with the unit packet, which is available upon request.

Multiple Choice

Levi is wanting to light a bulb.  What does he need to get the bulb to light?

• A battery and a paper clip

• A battery and a wire

• A paper clip and a wire

• A switch and a wire

Multiple Choice

The picture shows an electrical circuit. This circuit is a series circuit because: 

• It has 3 light bulbs.

• The same current flows through all three light bulbs.

• It uses a single battery.

• The electrical current is divided between the three light bulbs

Multiple Choice

(T/F?)

In a series circuit, each light bulb has a different current. 

• True

• False

Multiple Choice

The voltage passing through each resistor in a parallel circuit is the same

• True

• False

Multiple Choice

The formula for equivalent resistance for two resistors in parallel is

• R_eq= R1 + R2

• $$\frac{1}{R_{eq}}=\frac{1}{R1}+\frac{1}{\text{R2}}$$  

Multiple Choice

To find the current flowing through a circuit we use a modified Ohms Law.  Which means we divide the ___ by the ___.

• voltage, resistance

• resistance, voltage

Multiple Choice

Voltage(V)= 20 Volts

Resistance (R)= 15.88 ohms

What is the current?

• 317.6 Amperes

• 1.26 Amperes

• 35.88 Amperes

Multiple Choice

Does the sum of the voltage drops across all resistors equals the battery voltage

• Yes

• No

Multiple Choice

Voltage here remains ___   _________ in each resistor, but the current is different.

• the highest

• way different

• the difference

• the same

Multiple Choice

The current flowing through each branch of a parallel circuit must equal the total current, due to the Law of Conservation of Charge

• True

• False

Multiple Choice

For resistors in series, the larger the resistance is, the _______ the voltage drop that is required.

• smaller

• more stable

• larger

Multiple Choice

When current is constant or same through the wire, the relation between the voltage and resistance is......

• The more resistance , the more voltage the light bulb has

• The more resistance, the less voltage the light bulb has

Multiple Choice

Current is measured in

• Volts

• Amperes

Multiple Choice

What tool do you need to measure the voltage?

• Voltmeter

• Altimeter

• Fuel Gauge

• Ammmeter

Multiple Choice

To measure current you would use a......

• RPM Gauge

• Ammeter

• Altimeter

• Voltmeter