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WorksheetsE2/3: Resistance and Internal Resistance
Total questions: 12
Worksheet time: 7mins
What is the unit of measurement for resistance?
Voltage
Ampere
Watts
Ohms
How to you calculate the total resistance in a series circuit?
R1 + R2+ R3
R1 - R2 - R3
1/R1 + 1/R2 + 1/R3
R1 = R2 = R3
How do you calculate total resistance in a parallel circuit?
R1 + R2 + R3
R1 - R2 - R3
1/R1 +1/R2 + 1/R3 = 1/RT
R1 = R2 = R3
What is the equivalent or total resistance (Re) across this circuit?
3 kΩ
10 kΩ
13 kΩ
18 kΩ
R =
Resistance
Internal Resistance
Current
Resistivity
r =
Resistance
Internal Resistance
Current
Resistivity
What is the resistance if the voltage is 10V and the current is 2A?
20 Ω
5 Ω
12 Ω
8 Ω
How do you measure potential difference in a circuit?
Voltmeter
Ammeter
Thermistor
Battery pack
If the length of a wire increases, the resistance ____________
a. decreases
b. increases
c. stays the same
d. unknown
A high resistance voltmeter records the potential difference across a battery which is connected to a variable resistor of resistance 𝑅.
R, as shown in the figure below.
The reading on the voltmeter, 𝑉
V, takes the following values:
when V=6.0V when 𝑅=2.0Ω
when V=8.0V when 𝑅=4.0Ω
Calculate the value of r
6.00 Ω
2.00 Ω
2.50 Ω
1.00 Ω
