Newton's Laws
An object at rest stays at rest unless acted upon by an external force. What law is this?
Law of Inertia / Newton’s First Law
What is the flow of electric charges called?
Electric Current
Why do we wear seatbelts while riding vehicles?
To prevent passengers from moving forward during sudden stops.
What formula represents Newton’s Second Law?
F = ma
What is the SI unit of electric current?
Ampere (A)
Why does a balloon move backward when air escapes?
Action and reaction forces.
Why is it harder to push a truck than a bicycle?
A truck has greater mass and greater inertia.
What formula is used to calculate electric current?
I = Q/t
Why do electric fans and televisions usually use AC?
They operate using alternating current from household electricity.
A rocket moves upward because gases are pushed downward. What law explains this?
Law of Interaction / Newton’s Third Law
What is the difference between DC and AC?
DC flows in one direction while AC changes direction periodically
What happens to the current in a circuit if the resistance increases while the voltage remains the same?
The current decreases.
A passenger moves forward when a vehicle suddenly stops. Explain why.
The body continues moving due to inertia.
Why is understanding electric current important?
It helps us use electrical devices safely.
Why is understanding electrical circuits important?
It helps ensure safe and efficient use of electrical devices.