Worksheets10 Electric circuits basics
Total questions: 20
Worksheet time: 19mins
Voltage is
the energy per unit charge
the rate of flow of charge
the energy per unit time
the charge per unit time
Current is
the energy per unit charge
the rate of flow of charge
the energy per unit time
the charge per unit energy
Power is
the energy per unit charge
the rate of flow of charge
the energy per unit time
the charge per unit time
Resistance is
the energy per unit charge
the rate of flow of charge
the ratio of voltage to current
the charge per unit time
Why electrical wiring usually are covered with a layer of plastic?
To make it look pretty
To help electricity flow along the wire
To make it safe
To add more energy
Why is electrical wiring usually made from copper?
Because copper is shiny
Because copper conducts electricity well
Because copper is not magnetic
Because copper carries electricity well
1. Which switch or switches must be closed to make both the lamps light?
Only switch 1
Only switch 1
Switches 1 and 2
Switches 1 , 2 and 3
If lamp 1 is unscrewed from its holder, what will happen to lamp 2?
It will get brighter
It will stay the same brightness
It will go out
Nothing will happen
A current of 5.0 A flows in a resistor for 25 s. How much charge has passed through the resistor in this time?
125 C
5.0 C
0.20 C
5.0 A
A battery supplies 15.0 C of charge at a voltage of 12 V. How much work has the battery done on this charge?
12.5 J
180 J
0.80 J
12.5 W
A 12 Ohm and a 7 Ohm resistor are connected in series across a 20 V dc supply. What is the total circuit resistance?
19 Ω
5.0 Ω
84 Ω
4.42 Ω
The unit for potential difference
Volt
Amp
Watt
Joule
The unit of electric current
Amp
Volt
Watt
Joule
The unit of power
Volt
Watt
Amp
Joule
The unit of resistance
Ohm
Volt
Joule
Watt
The unit of electric charge
Coulomb
Amp
Volt
Watt
The unit of work done
Joule
Volt
Amp
Watt
What current flows through a 10kΩ resistor when connected in series with a 2kΩ resistor and a 9.5V power supply?
79 A
0.79A
0.79mA
0.0079A
Q stands for
charge
current
voltage
power
In the equation : W = VQ
W stands for work done
Q stands for current
V stands for voltage
W is measured in the unit Joule
