
Exploring Electricity and Circuits
Authored by Frew Abebe
Others
10th Grade
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the unit of electric current?
Ampere
Ohm
Watt
Volt
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Define Ohm's Law.
Ohm's Law: V = I * R
I = V - R
R = V + I
V = I / R
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the difference between series and parallel circuits?
In series circuits, current is the same through all components; in parallel circuits, voltage is the same across all components.
In series circuits, components are connected in a loop; in parallel circuits, they are connected in a straight line.
In series circuits, voltage is the same across all components; in parallel circuits, current is the same through all components.
In series circuits, both current and voltage are the same across all components; in parallel circuits, they differ.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How do you calculate the total resistance in a series circuit?
R_total = R1 * R2 * R3 * ... * Rn
R_total = R1 + R2 + R3 + ... + Rn
R_total = R1 - R2 - R3 - ... - Rn
R_total = 1/(1/R1 + 1/R2 + 1/R3 + ... + 1/Rn)
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the function of a capacitor in a circuit?
The function of a capacitor in a circuit is to store and release electrical energy.
To convert AC to DC.
To measure voltage in a circuit.
To amplify electrical signals.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Explain the concept of voltage.
Voltage is the resistance offered by a conductor.
Voltage is the speed of electric current flow.
Voltage is the amount of electric charge in a circuit.
Voltage is the measure of electric potential difference between two points.
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the role of a resistor in an electrical circuit?
A resistor increases current flow in a circuit.
A resistor limits current and controls voltage in an electrical circuit.
A resistor stores electrical energy for later use.
A resistor acts as a power source in an electrical circuit.
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