WorksheetsUnderstanding Electricity Concepts
Total questions: 10
Worksheet time: 5mins
What is Ohm's Law formula?
V = I * R
V = R / I
I = V + R
R = V - I
If a circuit has a voltage of 12V and a resistance of 4Ω, what is the current?
6A
4A
2A
3A
In a series circuit, how does the total resistance compare to individual resistances?
The total resistance is greater than the individual resistances.
The total resistance is the same as the largest individual resistance.
The total resistance is equal to the sum of individual resistances.
The total resistance is less than the smallest individual resistance.
What happens to the total current in a parallel circuit if one branch is disconnected?
The total current decreases.
The total current remains the same.
The total current becomes zero.
The total current increases.
If two resistors of 6Ω and 3Ω are in series, what is the total resistance?
12Ω
3Ω
9Ω
6Ω
How do you calculate the equivalent resistance of resistors in parallel?
R_eq = R1 * R2 / (R1 + R2)
R_eq = R1 - R2
R_eq = 1 / (1/R1 + 1/R2 + ... + 1/Rn)
R_eq = R1 + R2 + ... + Rn
What is the unit of electrical resistance?
Watt
Ampere
Ohm
Volt
In a series circuit, does the voltage remain the same across all components?
Yes, the voltage is the same across all components.
No, the voltage does not remain the same across all components.
The voltage varies but only increases across components.
The voltage is constant and does not change in a series circuit.
What is the effect of adding more resistors in series on the total resistance?
The total resistance fluctuates randomly.
The total resistance increases.
The total resistance decreases.
The total resistance remains the same.
In a parallel circuit, how does the voltage across each resistor compare?
The voltage is equal to the total voltage of the circuit.
The voltage is zero across all resistors.
The voltage across each resistor is different.
The voltage across each resistor is the same.
