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WorksheetsSeries and Parallel with Ohm's Law
Total questions: 19
Worksheet time: 17mins
The equivalent resistance for a group of parallel resistors is (điện trở tương đương trong đoạn mạch song song thì )
Less than any resistor in the group.
Equal to the smallest resistance in the group.
Larger than any resistor in the group.
Equal to the largest resistance in the group.
The three bulbs are identical and the two batteries are identical. Compare the brightnesses of the bulbs.
A > B > C
A > C > B
A > B = C
A < B = C
The potential difference across the 10 resistor is
30 V
20 V
15 V
2 V
What things about the resistors in this circuit are the same for all three?
Current I
Resistance R
Potential difference
Current I and resistance R
The battery current I is
3 A
2 A
1 A
2/3 A
The brightness of bulb A increases when the switch is closed or the switch is open?
When the switch is closed
When the switch is open
The battery current I is
3 A
2 A
1 A
2/3 A
What is the unit for potential difference?
Ohm
Volt
Watt
Ampere
What is the unit for current?
Ampere
Watt
Volt
Ohm
The following type of circuit has the same voltage throughout the entire circuit.
series
parallel
The following type of circuit has the current travelling in only one continuous pathway.
series
parallel
Total resistance in this type of circuit is always larger than any of its single resistor.
series
parallel
This type of circuit has the current travelling through branches.
series
parallel
The current is the same throughout this type of circuit
series
parallel
The total resistance in this type of circuit is always smaller than any of its single resistor.
series
parallel
When the switch closed, the battery current
Decreases
Stay the same
Increases.
The light bulbs are identical. Initially both bulbs are glowing. What happens when the switch is closed?
Nothing
A stays the same; B gets dimmer.
A gets brighter; B stays the same.
A gets brighter; B goes out.
What does the voltmeter read?
3 V
2 V
6 V
Some other value
What does the ammeter read?
Nothing because this will fry the meter
3 A
6 A
2 A
