Circuit Fundamentals

What is the SI unit of conductance?

1. Henry
2. Ohm
3. Siemens
4. Tesla

A 4 Ω and an 8 Ω resistor are in series across 12 V. What is the voltage across the 8 Ω resistor?

1. 12 V
2. 8 V
3. 6 V
4. 4 V

A 6 A current splits between 2 Ω and 4 Ω resistors in parallel. How much flows through the 2 Ω resistor?

1. 2 A
2. 4 A
3. 3 A
4. 6 A

Kirchhoff's voltage law states that, around any closed loop, the sum of the voltages is:

1. Infinite
2. Zero
3. Equal to the total current
4. Equal to the largest voltage

At a node, 3 A and 2 A flow in. One branch carries 1 A out. How much flows out of the other branch?

1. 1 A
2. 6 A
3. 5 A
4. 4 A

A resistor has bands brown, black, red. What is its value?

1. 10 kΩ
2. 102 Ω
3. 1 kΩ
4. 100 Ω

A resistor has bands red, red, orange. What is its value?

1. 220 kΩ
2. 2.2 kΩ
3. 223 Ω
4. 22 kΩ