WorksheetsElectricity and Magnetism Quiz
Total questions: 46
Worksheet time: 2hrs 36mins
What is the purpose of a switch in an electric circuit?
To generate heat in the circuit
To change the color of the electricity
To open or close the circuit and control the flow of electricity.
To make the circuit more complicated
Explain the difference between series and parallel circuits.
The main difference is that in a series circuit, the current has only one path to flow through all the components, while in a parallel circuit, the current has multiple paths to flow through different branches of the circuit.
In a series circuit, the current has multiple paths to flow through different branches of the circuit, while in a parallel circuit, the current has only one path to flow through all the components.
In a series circuit, the voltage has only one path to flow through all the components, while in a parallel circuit, the voltage has multiple paths to flow through different branches of the circuit.
There is no difference between series and parallel circuits, they both function in the same way.
How does the strength of a magnetic field change as you move away from a magnet?
Decreases
Becomes unpredictable
Remains constant
Increases
What is the relationship between voltage, current, and resistance in an electric circuit?
V = I ^ R
V = I + R
V = I * R
V = I / R
What is the unit of electric current?
volts
ohms
Amperes
watts
Explain how an electromagnet works.
An electromagnet works by using a battery to create a gravitational field around the coil.
Passing a mechanical force through a coil of wire creates a magnetic field around the coil.
An electromagnet works by using a permanent magnet to generate electricity.
Passing an electric current through a coil of wire creates a magnetic field around the coil.
How does the Earth's magnetic field affect a compass needle?
The Earth's magnetic field causes the compass needle to spin in circles.
The Earth's magnetic field has no effect on a compass needle.
The Earth's magnetic field causes the compass needle to align with the north-south direction.
The Earth's magnetic field causes the compass needle to point towards the east-west direction.
What is the role of a resistor in an electric circuit?
To increase the flow of electricity
To decrease the flow of electricity
To change the color of the electricity
To generate heat in the circuit
What is the unit of electrical resistance?
Amperes
Volts
Ohms
Watts
What happens to the brightness of a bulb in a series circuit if more bulbs are added?
The brightness of the bulb increases
The brightness of the bulb decreases
The brightness of the bulb remains the same
The bulb goes out
The magnets repel each other if like poles are held together. This magnetic force is called _____________
Repulsion
Attraction
The magnets attract each other when like poles are held together. This magnetic force is called ____________.
Repulsion
Attraction
If a lightbulb has a resistance of 2 ohms with a 9 Volt battery. The total current of the circuit is
2 A
4.5 A
18 A
The direction of electric current flows from the _____ end of the battery to the _____ end of the battery
positive, negative
negative, negative
negative, positive
What is the total resistance in this series circuit?
3 Ω
1 Ω
9 Ω
What voltage is required for a 2 A current to flow through a 3-ohm resistor?
6 V
1.5 V
0.67 V
Materials, like wool and rubber, which current will not easily flow through are called
conductors
semiconductors
insulators
As Jack toasts his morning waffle in the toaster, 4 A of current flows with a voltage of 120 V across the toaster. The resistance of the toaster is
0.033 Ω
30 Ω
480 Ω
The current in a series circuit
is the same at all points in a circuit
is greatest in the resistor with the highest resistance
is greatest in the resistor with the lowest resistance
Which of the following would be a good choice to temporarily close a gap in a circuit with a shortened wire?
eraser
glass
paper clip
paper dollar bill
Current that flows in 1 direction and is usually produced by batteries.
AC
DC
Magnetism
CC
Current that flows in two directions and produced by powerplants.
AC
DC
CC
EC
Which picture below shows a parallel circuit?
In which circuit below, will all lights go out when one light is broken?
If you cut a magnet in half, what happens to the poles?
One half gets the North Pole, the other half gets the South Pole.
Both halves get only a South Pole.
Both halves get only a North Pole.
Both halves get a North pole and a South Pole.
What is responsible for the Magnetic Field around Earth?
The Sun
The Earth's core
The Earth's crust
The Earth's mantle
What protects Earth from solar winds?
The poles
The moon's gravity
The magnetic field
The tidal range
The light spectacle due to Earths Magnetic Field and Solar Radiation is known as
Aurora Borealis
Electron Waves
Lightning
Electric Snow
