Physics - Unit 6 Electricity Review

1) VOLTAGE = __________________________________________ Units in ________

• VOLTAGE

• CURRENT

• RESISTANCE

• POWER

2) CURRENT = __________________________________________ Units in ____________

• CURRENT = __________________________________________ Units in ____________

• CURRENT = 5A Units in 10 seconds

• CURRENT = Voltage x Resistance

• CURRENT = 2Amps Units in Minutes

3) RESISTANCE = __________________________________________ Units in ________

• RESISTANCE

• IMPEDANCE

• CONDUCTANCE

• VELOCITY

4) SERIES CIRCUIT = __________________________________________

• A circuit in which components are connected sequentially

• A circuit where components are connected in parallel

• A circuit that allows current to split

• A circuit where components are connected alternately

5) PARALLEL CIRCUIT = __________________________________________

• Resistors are connected in parallel.

• Current splits into several paths.

• Voltage across each resistor is the same.

Trace the flow of current through the circuit by drawing arrows. How many arrows should be drawn?

• One

• Two

• Three

• Four

2) Identify the type of circuit this diagram shows. How do you know?

• Series circuit, because the components are connected in a single path.

• Parallel circuit, because the components have multiple paths.

• Series-parallel circuit, because it combines both series and parallel connections.

• None of the above.

Adding another light bulb to the circuit in series decreases the brightness of the other light bulbs due to increased resistance and reduced current.

• The brightness decreases.

• The brightness increases.

• The brightness remains the same.

• The brightness becomes unpredictable.

4) If one of the light bulbs is unscrewed or burnt out, then the brightness of the other light bulbs remains unchanged because each bulb is connected in parallel.

• They remain unchanged because the bulbs are wired in parallel.

• They become dimmer due to reduced current.

• They become brighter because the voltage increases across them.

• Their brightness fluctuates unpredictably.

5) What is the total resistance of the circuit to the right?

• 6 Ohms

• 8 Ohms

• 10 Ohms

• 12 Ohms