Circuit Basics
A complete path that allows electric current to flow
Circuit
According to Ohm’s Law, what happens to the current if the voltage increases while resistance stays the same?
What is the current increases?
What is the name for the flow of electric charge in a circuit?
Current
What is a magnet created by an electric current flowing through a wire called?
What is an electromagnet?
Which device uses electrical energy to produce motion?
What is a motor?
A type of circuit does the current have only one path to follow
What is a series circuit?
According to Ohm’s Law, what happens to the current if resistance increases and voltage stays the same?
Current decreases.
In conventional current flow, which direction does current move in a circuit?
What is from the positive terminal to the negative terminal?
What must be present for an electromagnet to work?
What is an electric current flowing through a wire?
Which device uses motion to produce electrical energy?
What is a generator?
A type of circuit that allows electrical current to flow through more than one path.
What is a parallel circuit?
Ohm's
What direction do electrons actually move in a circuit?
What is from the negative terminal to the positive terminal?
Name a way you can increase the strength of an electromagnet.
What is increase the coils?
What type of energy transformation occurs in an electric motor?
What is electrical energy changing into mechanical (motion) energy?
In a series circuit with multiple light bulbs, what happens to the entire circuit if one bulb burns out?
What is the entire circuit stops working and all bulbs go out?
If the voltage in a circuit is 12 volts and the resistance is 4 ohms, what is the current?
What is 3 amps?
(I = V ÷ R → 12 ÷ 4 = 3)
What type of current constantly changes direction, like the electricity from a wall outlet?
What is alternating current (AC)?
What happens to an electromagnet when the electric current is turned off?
What is it loses its magnetism?
What type of energy transformation occurs in a generator?
What is mechanical energy changing into electrical energy?
Name an advantage of parallel circuit.
Parallel circuits have several advantages: 1. Independent Paths: Each component in a parallel circuit has its own independent path for the current to flow through. This means that if one component fails, the rest of the circuit can still function. 2. Voltage: The voltage across each component in a parallel circuit is the same. This allows each component to operate at its intended voltage level. 3. Addition of Components: Additional components can be added without affecting the voltage across the other components. 4. Current: The total current in the circuit is the sum of the currents through each path, which can provide more power when needed.
A circuit has a current of 2 amps and a resistance of 6 ohms. What is the voltage?
What is 12 volts?
(V = I × R → 2 × 6 = 12)
Which type of current flows in only one direction and is used by batteries?
What is direct current (DC)?
Which type of material is commonly used as the core of an electromagnet because it easily becomes magnetized and demagnetized?
What is iron?
Which device would be used in a power plant to produce electricity from moving turbines?
What is a generator?