ISCET DC Circuits Fundamentals 2

Question 1

Three resistors of 10Ω, 20Ω, and 30Ω are connected in parallel. What is the equivalent resistance?

Accepted Answer

5.45Ω

Answer

60Ω

Answer

20Ω

Answer

3.33Ω

Question 2

A 12V battery with an internal resistance of 0.5Ω supplies current to a 5.5Ω external resistor. What is the terminal voltage?

Accepted Answer

11V

Answer

12V

Answer

10V

Answer

6V

Question 3

Which law states that the algebraic sum of all currents entering and leaving a node equals zero?

Accepted Answer

Kirchhoff's Current Law

Answer

Kirchhoff's Voltage Law

Answer

Ohm's Law

Answer

Norton's Theorem

Question 4

A circuit has a 24V source with two resistors in series: 6Ω and 18Ω. What is the voltage across the 18Ω resistor?

Accepted Answer

18V

Answer

6V

Answer

12V

Answer

24V

Question 5

What happens to total resistance when additional resistors are added in parallel to a circuit?

Accepted Answer

Total resistance decreases

Answer

Total resistance increases

Answer

Total resistance stays the same

Answer

Total resistance doubles

Question 6

A 100Ω resistor dissipates 4W of power. What current flows through it?

Accepted Answer

0.2A

Answer

0.04A

Answer

400A

Answer

2A

Question 7

In a series circuit with a 9V battery and three equal resistors, each resistor drops which voltage?

Accepted Answer

3V

Answer

9V

Answer

1V

Answer

27V