SC9 Electricity Quiz 2

A 3-V battery sends a current of 0.10 A through a light bulb. What is the resistance of the filament of the bulb?

• .033 Ω

• 30 Ω

• .3 Ω

• 300 Ω

When the voltage in a circuit increases, what happens to the current?

• Current Increases

• Current Decreases

• Current Remains the same

Which of the following is Ohm's Law?

• Current is proportional to Voltage and inversely proportional to resistance.

• Current is proportional to Resistance and inversely proportional to Voltage

• Resistance, Current and Voltage are proportional to each other.

Imagine you are testing an electrical toy. It gets plugged into a home outlet, which has an electrical potential difference of 120V. The wires are small and you do not want the current to go above 1.5A. How high must the toy's resistance be?

• 180Ω

• 60Ω

• 0.0125Ω

• 80Ω

If we connect a 4.5V battery to a circuit with a resistance of 30Ω, how much current would an ammeter measure in the circuit?

• 150mA

• 15mA

• 1.5A

• 15A

What is resistance measured in?

• Ω (Ohms)
• V (Volts)
• A (Amps)
• W (Watts)

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.

This is an example of a _______ circuit

• open

• series

• parallel

• switch

What is the Total Resistance in this circuit?

• 3 ohms

• 30 ohms

• 30 amps

• 90 volts

What stays the same throughout this whole circuit?

• Resistance

• Voltage

• Parallel

• Current