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Worksheetselectricity
Total questions: 19
Worksheet time: 10mins
what does LDR stand for?
light detecting resistor
light demonstrating resistor
light dependent resistor
light dependent resistivity
current is the flow of....
atoms
protons
neutrons
electrons
the piece of equipment used to measure current is called...
ammeter
current meter
voltmeter
ohmmeter
the piece of equipment used to measure voltage is called
voltameter
voltmeter
voltage divider
ohmmeter
What provides the energy to push the electrons around the circuit?
current
resistance
Voltage or potential difference
wires
calculate the resistance of the resistor using the graph
0.2 ohms
5 ohms
1.8 ohms
3.2 ohms
using the triangle, how do you calculate resistance?
R=IV
R=VI
R=IV
none of the above
What law is being demonstrated using this equipment?
Charles' law
Hookes' law
Boyles' law
Ohms' law
how would you describe how the voltmeter is connected across the resistor?
in series
in parallel
perpendicular
constant
another name for a variable resistor is...
ammeter
ohmmeter
rheostat
diode
what is the relationship of the current to the voltage (potential difference)
variable
constant
directly proportional
inversely proportional
how would you describe how the bulbs are arranged?
series
parallel
connected
variable
how would you describe how the bulbs are arranged?
series
parallel
variable
constant
what happens when you remove one of the bulbs?
the other bulbs get dimmer
the other bulbs get brighter
the other bulbs blow
the other bulbs stop lighting
what happens when you remove one of the bulbs?
the 2 other bulbs get dimmer
the 2 other bulbs get brighter
the 2 other stay lighting
the 2 other stop lighting
this is the symbol for a
diode
light dependent resistor
capacitor
battery
what happens to the reading on the ohmmeter when light falls on the LDR?
stays the same
increases
decreases
varies
an electric kettle is connected to the 230 V mains power supply. if the kettle draws a current of 10 A, calculate the power of the kettle using the formula P=VI
230 W
23 W
2300 W
0.04 W
what is the substance at position B referred to as?
insulator
conductor
switch
capacitor
