Electricity and Circuits

What is voltage?

• Voltage is the electric potential difference between two points in a circuit, measured in volts.

• Voltage is the amount of current flowing through a circuit.

• Voltage is the resistance offered by a circuit to the flow of current.

• Voltage is the power consumed by an electrical device.

What is an electromagnet?

• A type of magnet created by electric current flowing through a coil of wire.

• A permanent magnet made from iron.

• A magnet that only works in high temperatures.

• A device that generates electricity using magnetic fields.

What is the difference between a series circuit and a parallel circuit?

• A series circuit has multiple paths for electricity to flow, while a parallel circuit has only one path.

• A series circuit has only one path for electricity to flow, while a parallel circuit has more than one path.

• A series circuit can have varying voltages across components, while a parallel circuit has the same voltage across all components.

• A series circuit is used in household wiring, while a parallel circuit is used in electronic devices.

What is a circuit breaker?

• A device that stores electrical energy for later use.

• An automatic switch that interrupts the flow of electricity in a circuit when it detects an overload or short circuit.

• A type of fuse that can be replaced easily after it blows.

• A tool used to measure electrical current in a circuit.

What is the role of a resistor in a circuit?

• A resistor is used to limit the flow of electric current in a circuit.

• A resistor is used to increase the voltage in a circuit.

• A resistor is used to store electrical energy in a circuit.

• A resistor is used to convert electrical energy into heat.

What happens to the total resistance in a series circuit when more resistors are added?

• The total resistance decreases.

• The total resistance remains the same.

• The total resistance increases when more resistors are added.

• The total resistance fluctuates randomly.

What is Ohm's Law?

• Ohm's Law states that the current (I) through a conductor is directly proportional to the voltage (V) and inversely proportional to the resistance (R).

• Ohm's Law states that the voltage (V) is equal to the current (I) divided by the resistance (R).

• Ohm's Law states that the resistance (R) is equal to the current (I) multiplied by the voltage (V).

• Ohm's Law states that the current (I) is equal to the voltage (V) minus the resistance (R).

What is current?

• Current is the flow of electric charge in a circuit, measured in amperes (amps).

• Current is the resistance to the flow of electric charge in a circuit.

• Current is the voltage difference across a circuit.

• Current is the power consumed by an electrical device.

What are conductors?

• Materials that allow electricity to flow easily through them, such as copper and aluminum.

• Materials that do not allow electricity to flow, like rubber and glass.

• Materials that can only conduct heat, not electricity.

• Materials that are used to insulate electrical wires.

What is a circuit?

• A circuit is a closed loop that allows electricity to flow from a power source to a device and back again.

• A circuit is an open path that prevents electricity from flowing.

• A circuit is a type of electrical device that stores energy.

• A circuit is a measurement of electrical resistance.