CET DC Circuit Analysis & Theory 3

Question 1

Three resistors of 6 Ω, 12 Ω, and 4 Ω are connected in parallel. What is the equivalent resistance?

Accepted Answer

2 Ω

Answer

22 Ω

Answer

11 Ω

Answer

7 Ω

Question 2

Kirchhoff's Current Law states that the sum of currents entering a node equals:

Accepted Answer

The sum of currents leaving the node

Answer

Zero

Answer

The supply voltage

Answer

The total resistance

Question 3

In a parallel circuit with a 24 V source and branch resistors of 8 Ω and 12 Ω, what is the total current supplied by the source?

Accepted Answer

5 A

Answer

1 A

Answer

2 A

Answer

7 A

Question 4

A current divider has two parallel resistors, R1 = 10 Ω and R2 = 40 Ω. If total current is 5 A, how much flows through R1?

Accepted Answer

4 A

Answer

1 A

Answer

2 A

Answer

5 A

Question 5

Which of the following best describes a short circuit condition in a DC network?

Accepted Answer

Zero resistance path between two nodes

Answer

Very high resistance path between two nodes

Answer

Open path with no current flow

Answer

A path with exactly 1 Ω resistance

Question 6

If the voltage across a parallel combination is 12 V and one branch draws 0.3 A while another draws 0.5 A, what is the total power consumed?

Accepted Answer

9.6 W

Answer

3.6 W

Answer

6 W

Answer

12 W

Question 7

Which statement about parallel circuits is correct?

Accepted Answer

Voltage is the same across all branches

Answer

Current is the same in all branches

Answer

Resistance increases as more branches are added

Answer

Opening one branch increases current in others