WorksheetsIPC Electricity Review
Total questions: 15
Worksheet time: 30mins
In an experiment, students took new identical batteries and tested their life when powering 1 bulb, 2 bulbs in series, and 2 bulbs in parallel. The table below gives the effective battery life for each circumstance.
Which statement seems reasonable from the above findings?
Batteries are designed for series circuits.
Batteries always last longer with 2 bulbs
Bulbs in series draw less current from a battery.
Bulbs in parallel have more resistance than bulbs in series.
A hair dryer has a resistance of 8.50 ohms, and 110 volts is supplied by the electrical outlet. What amount of current is flowing? (Give the answer in amps, using two decimal places.)
12.94 A
.077 A
935 A
None of the above
A 6.2 volt battery sends a 0.44 amp current through a miniature light bulb. Calculate the resistance for the light bulb. (Give the answer in ohms, using two decimal places.)
.071 Ohms
2.73 Ohms
14.09 Ohms
None of the above
When a piece of glass is inserted into a simple circuit, the light bulb of the circuit does not light up. Under these conditions, this would mean the glass is a(n) —
resistor
conductor
insulator
capacitor
An open circuit —
allows electricity to flow
has no resistance
requires little voltage
does not allow electricity to flow
A student is using a simple circuit of wires, a battery, and a small light bulb to test objects for electrical conductivity. How would the student know which object is the best conductor?
The object which allows the bulb to glow the brightest is the best conductor
The object which allows the bulb to no glow is the best conductor
A student is working with two electrical devices. Device A uses a current of 6.0 amps and has a resistance of 4.5 ohms. Device B uses a current of 8.0 amps and has resistance of 3.5 ohms.
Which device uses the least amount of voltage?
Provide evidence to support your answer?
Device A: 27 V
Device B: 28 Device A uses the least voltage
Device A: 1.3 V
Device B: 2.3 V
Device A uses the least voltage
Device A: 0.75 V
Device B: 0.44 V
Device B uses the least voltage
None of the answers are correct
A student experimented by placing a second bulb and then a third bulb in series with an existing battery and bulb. The student noticed that as each bulb was added, all bulbs got dimmer. As an experimental control, all of the bulbs in the circuit were identical.
Which statement represents a valid conclusion from the above experiment?
The electrons get tired as they go through each bulb and are really tired when they get to the third bulb.
Three bulbs draw more current from the battery, pulling its voltage down.
The first bulb uses up some of the current, leaving less for the other bulbs.
The resistance of three bulbs in series is greater than the resistance of one bulb.
The diagram below represents a circuit. How much current is flowing through the circuit?
0.55 A
1.81 A
8.0 A
14.5 A
The values shown in the table below are a measure of how much current will flow in a standard sample of metal when the sample is attached to a voltage source. Which metal is the best conductor of electricity?
Aluminum
Copper
Iron
Silver
A student composed a list of advantages of various types of circuits as shown below.
I. When one component of the circuit goes out, the rest of the components will continue working.
II. Additional components can be added without increasing resistance in the circuit.
III. There is one pathway for the electrical current to pass through.
Which advantages above only apply to parallel circuits?
I only
II only
I and II only
I, II, and III
Observe the diagram of a circuit. Each of the resistors depicted represents a light bulb. If the circuit breaks at the point indicated by the arrow, what will happen to the brightness and current flowing through the other two lights?
The lights will get brighter because the current increases through each light.
The lights will get dimmer because the current decreases through each light.
The lights will stay the same brightness because the current remains constant through each light.
The lights will go out because the current is unable to flow through the broken circuit.
Three resistors of 12 ohms, 12 ohms, and 6 ohms are connected in parallel. The combination is connected to a 12 V battery. What is the current through the 6 ohms resistor shown above?
1 A
2 A
3 A
4 A
Students were provided several new AA batteries, a set of identical lightbulbs, and wire. The teacher asked students to create a sample circuit with a single battery and single lightbulb. Students were asked to create other circuits with the materials provided and describe the relative brightness of the lightbulbs compared to the same circuit. Which circuit will bulb X have the same brightness as the lightbulb in the sample circuit?
A closed circuit with a resistance of 2.5 ohms is powered by a 9.4-volt battery. How much current moves throug h the circuit? Record your answer. Be sure to use the correct place value
3.76 A
23.5 A
.27 A
None of the above
