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WorksheetsCurrent, Voltage, and Resistance
Total questions: 20
Worksheet time: 12mins
Which statement is true?
The light bulb will light up because the circuit is complete.
The light bulb will light up because the circuit is broken.
The light bulb will not light up because the circuit is complete.
The light bulb will not light up because the circuit is open.
Resistance is
Measured using an ammeter
Units are 'volts'
How difficult it is for electrons to move through an object
The continuous movement of electrons in a wire
A conductor has _____ resistance. An insulator has ______ resistance.
Low; high.
Negative; positive.
Positive, negative.
High, low.
A resistor
Is the same as resistance
Is connected to a circuit in parallel
Is used in a circuit to control the amount of current
Is not measured in ohms
A student uses a length of wire as a resistor. He makes a second resistor from the same material.
To be certain of making a second resistor of higher resistance, he should use a piece of wire that is:
longer and thicker.
longer and thinner.
shorter and thicker.
shorter and thinner.
Which symbols are used for the units of current and of resistance?
A
B
C
D
Which two changes to a metal wire both increase resistance?
decreasing its length and increasing its temperature
increasing its length and decreasing its temperature
decreasing its thickness and increasing its temperature
increasing its thickness and decreasing its temperature
What is the unit of measure for current?
ampere
current
voltage
ohms
What unit of measure is for resistance?
ohms
ampere
voltage
watts
What moves when we say that there is current?
inductors
conductors
electrons
atoms
If there is a current of 2A and a resistance of 24 ohms, what voltage will there be?
26 V
48 V
12 V
22 V
If the voltage is increased and the resistance stays the same, what will current do?
If the voltage stays the same and resistance is increased, what will current do?
If a toaster produces 12 ohms of resistance in a 120-volt circuit, what is the amount of current in the circuit?
5A
10A
15A
20A
