EIT Electrical Circuits

Question 1

According to Ohm's Law, what is the current through a 10Ω resistor with 20V across it?

Accepted Answer

2 A

Answer

0.5 A

Answer

200 A

Answer

10 A

Question 2

What is the total resistance of three 6Ω resistors connected in parallel?

Accepted Answer

2 Ω

Answer

18 Ω

Answer

6 Ω

Answer

3 Ω

Question 3

Kirchhoff's Current Law (KCL) states that:

Accepted Answer

Current entering a node equals current leaving the node

Answer

Voltage around a loop sums to zero

Answer

Power consumed equals power supplied

Answer

Impedance is the sum of resistance and reactance

Question 4

What is the impedance of a 100Ω resistor in series with a capacitive reactance of 100Ω?

Accepted Answer

141.4 Ω

Answer

200 Ω

Answer

100 Ω

Answer

50 Ω

Question 5

The power factor of a purely resistive circuit is:

Accepted Answer

1

Answer

0

Answer

0.5

Answer

−1

Question 6

What is the energy stored in a 4H inductor carrying 3A?

Accepted Answer

18 J

Answer

12 J

Answer

6 J

Answer

36 J