WorksheetsSKEE 1013 - Basic Laws
Total questions: 15
Worksheet time: 9mins
What is the correct formula for Ohm’s Law?
V = I + R
V = I × R
V = I ÷ R
V = R × I²
(KVL) In a closed loop, the total of all voltage sources is equal to:
The sum of voltage drops
The total current
The sum of resistances
The power in the circuit
At any junction, the sum of currents flowing into the junction is
Zero
Equal to the sum of currents flowing out
Greater than the currents flowing out
Less than the currents flowing out
If you increase the resistance in a circuit while keeping the voltage constant, what happens to the current?
It decreases
It increases
It stays the same
It doubles
If the voltage across a resistor is 10 V and the resistance is 5 Ω, what is the power dissipated?
10 W
20 W
25 W
50 W
Which statement is true for a parallel circuit?
The total resistance is the sum of individual resistances
The voltage is the same across all components
The current is the same through all components
None of the above
What happens to the total resistance when you add more resistors in parallel?
It increases
It decreases
It stays the same
It depends on the resistances
At a node, I1 = 2A enters, I2 = 3A enters, and I3 leaves. What is I3?
1 A
3 A
5 A
6 A
If one of the elements in a loop has an open circuit, KVL:
Cannot be applied
Still holds true, but current is zero
Becomes invalid
Gives infinite voltage
In a closed loop, the voltage drops are 5 V and 7 V, and the source voltage is 12 V. The KVL equation is satisfied because:
12 − (5 + 7) = 0
12 + (5 + 7) = 0
12 − 5 − 7 = −2
(5 + 7) − 12 = 2
The voltage divider rule and current divider rule are applied to:
Voltage divider = Series resistors
Current divider = Parallel resistors
Voltage divider = Parallel resistors
Current divider - Series resistors
Inductors only
Any combination of resistors
What is a node in an electrical circuit?
A point where two or more circuit elements are connected
A component that stores electrical energy
A closed path in which current flows
A resistor connected to ground
Two resistors R1 = 2kΩ and R2 = 3kΩ are connected in series across a 10V supply. What is the voltage across R2?
3V
4V
6V
10V
Two resistors R1 = 4kΩ and R2 = 5kΩ are connected in series across a 90V supply. What is the voltage across R2?
30V
40V
50V
10V
Two resistors R1 = 2Ω and R2 = 4Ω are connected in parallel with a total current of 6A. What is the current through R1?
2A
3A
4A
5A
