Electricity
What unit is current measured?
Amperes (A)
What unit is Voltage measured?
Volts (v)
The build up of charge is known as _______
Static Electricity
Electric current of 60mA is equivalent to ____A
0.06A
Mr Yap has been teaching for how many years?
2-3 years
True or False: A systematic error is due to the incorrect use or limitations of equipment used in a practical activity.
True
Electric cars will eventually cause pollution. True of False
True. They will indirectly cause some pollution due to power generation used to recharge batteries.
True or False: Batteries can transform kinetic energy to electrical energy.
False
A 6V battery is connected in a parallel circuit connected with 4 globes (each also in parallel).
What is the voltage of each globe?
6V
Mr Yap's favourite AFL team is?
An ammetre is connected in ________
Series
Lights in a house are connected in series or parallel?
Parallel
Are conductors or insulators good for an electric circuit?
Conductor.
Voltage in a circuit measures at 15V. A resistor is connected measuring 5ohms. How much current is flowing in this circuit?
3A
What church does Mr Yap attend?
City on a hill
A globe represents what in a circuit?
a load
What are turbines and how do they work?
Turbines are large, fan-like blades. The fan-like blades rotate coils of wire rapidly inside huge electromagnets. The motion of the coils in the magnetic field produces a large electric current.
In a Series Circuit, the current is (shared/constant), the voltage is (shared/constant).
current is constant and voltage is shared
A battery supplying 10V in a circuit is connected to two connected globes. The current flowing through the circuit is 500mA. Calculate the resistance of one globe.
R= V/I
R=10V/0.5A
R=20ohms
So one globe 20/2 = 10ohms each globe
16
In a parallel circuit, 5 globes are connected. Globe A is connected right after the battery. Globe B and C are connected in series after it, and globes D and E are connected parallel to B and C.
If globe was to burn out, which of the globes would still light up?
None.
Draw a circuit that includes 2 globes in parallel.
Add switches to show how you can turn one globe on and not the other.
Student response
Name the 5 parts of a dry cell.
1. ______ Terminal
2. ______ of chemicals
3. ______ Rod
4. ______ Case
5. ______ Terminal
1. Positive Terminal
2. Paste of chemicals
3. Carbon Rod
4. Zinc Case
5. Negative Terminal
An 8V cell is connected in a series circuit. The current flowing in this circuit is 800mA.
Calculate the resistance of a resistor, if a 4V cell was added to the circuit?
R=V/I
R=(8+4)/0.8
R=15ohms
When did Mr Yap get married? (year)
2019