Ohms Law
1. Name the three parts of the Ohms law. (I need the name and the abbreviation.)
2. Draw the triangle.
VIR
Voltage, current, resistance
Name in the correct order.
1. The electric potential difference
2. A material's opposition to the flow of electric current
3. The flow of electric charge
1. Voltage.
2. Resistance
3. Current
Electrons only have ONE path to flow through.
Series Circuit
There are MULTIPLE paths for the current to flow through.
Parallel Circuit
Produced by solar cells and chemical cells (batteries) Current only flows in one
DC Current
Out of VIR, Which are direct and inverse relationships.
1. Direct- Voltage and Current
2. Direct- Voltage and Resistance
3. Inverse- Current and Resistance
Based on your knowledge of series and parallel circuits, which statement provides the most accurate reasoning for wiring a house with one type of circuit over the other?
A series circuit is best, if one circuit is broken, then the other circuits will still work.
A series circuit is best, if one circuit is broken, then the other circuits will not work.
A parallel circuit is best, if one circuit is broken, then the other circuit will still work.
A parallel circuit is best, if one circuit is broken, then the other circuits will not work
Next Question : Draw that circuit.
Answer- 3.
1. What is the voltage if a resistance of 25 Ω produces a current of 250 amperes?
2. What voltage produces a current of 500 amps with a resistance of 50 Ω?
3.What is the current produced with a 9-V battery through a resistance of 100 Ω?
1. V = I x R V = (250) (25) V=6250 Volts
2.V = I x R V = (500) (50) V = 25,000Volts
3. I=V÷ R I = (9) ÷ (100) I = 0.09 Amps
1. An alarm clock draws 0.5 A of current when connected to a 120 volt circuit. Calculate its resistance.
2. A 12 Volt car battery pushes charge through the headlight circuit resistance of 10 ohms. How much current is passing through the circuit?
3. An electric heater works by passing a current of 100 amps though a coiled metal wire, making it red hot. If the resistance of the wire is 1.1 ohms, what voltage must be applied to it?
1. R = V/I R = 120V/0.5A R = 240Ω
2. I = V/R I = 12V/10Ω I = 1.2A
3. V = IR V = 100A * 1.1Ω V = 110V
1. A portable radio connected to a 9.0 V battery draws a current of 25 A. What is the resistance of the radio?
2. What type of energy is the electrical energy from the battery being converted into in this device?
1. 0.36 Ω
2. Sound and Heat
1. What are materials which are poor conductors and do not allow electrical current to flow through them easily.
2. What are the four examples that I gave.
1. Insulators
2. Examples: Oil, plastic, rubber, pure water
Name in the correct order. (Parallel and Series)
1. Brightness of bulbs impacted by number of bulbs added or removed
2.Voltage across each pathway equals power supply
3.Current same everywhere
4.Total resistance decreases with increasing pathways
5. Voltage shared among resistors
2. Series
3. Series
4.Parallel
5. Parallel
1. What happens to the current in a circuit if a 10Ω resistor is removed and replaced by a 20Ω resistor?
2. What happens to the current in a circuit if a 1.5-volt battery is removed and is replaced by a 3-volt battery?
1. It is cut in half
2. It doubles
1. John uses 3 standard 2.5 V battery. How much resistance is in the circuit if it uses a current of 0.5.
2. What is resistance measured in?
3. What is voltage measured in?
4. What is current measured in?
1. 15
2. Ohms (Ω)
3. Volts
4.Amperes
Name the currents in order. (AC AND DC)
1. Household and building electricity
2. Batteries
3.Electric Vehicles
4. Audio and Radio Signals
Name the circuits in the correct order. (Parallel and Series)
1. Household Wiring
2. Car Headlights
3. Flashlight
4. Powerstrips
1. Parallel
2. Parallel
3. Series
4. Parallel
1. are materials which allow electrical current to flow through them easily. are generally good electrical conductors.
2. These are generally good electrical conductors.
3. What are the four examples that I gave.
1.Conductors
2.Metals
3. silver, aluminum, iron, copper