# Electric Circuit Questions II

## Finding the equivalent resistance and total current in circuits consisting of series and parallel resistors. Calculation of voltage across in parallel and series resistors . Questions and solutions.

**Question 1**

In the circuit shown the figure above, R1 = 5 Ω, R2 = 3 Ω, R3 = 9 Ω, R4 = 2 Ω, R5 = 2 Ω, R6 = 5 Ω, R7 = 7 Ω, R8 = 8 Ω.

The current flowing through resistor R2 is 3 A.

What is the voltage of the supply source of the circuit?

A) 36.2 V

B) 45 V

C) 52.56 V

D) 74 V

E) 83.24 V

**Question 2**

In the circuit shown the figure above, R1 = 6 Ω, R2 = 5 Ω, R3 = 5 Ω, R4 = 10 Ω, R5 = 8 Ω, dur.

Voltage across the resistor R3 is 10 V.

What is the voltage of the supply source in the circuit?

A) 50 V B) 34 V C) 30 V

D) 26 V E) 18 V

**Question 3**

In the circuit shown the figure above, R = 6 Ω, R2 = 9 Ω, R3 = 9 Ω, R4 = 9 Ω, R5 = 1 Ω, R6 = 8.5 Ω, R7 = 12 Ω, R8 = 4 Ω, R9 = 3 Ω, R10 = 7 Ω

Voltage across the resistor R3 is V3, voltage across resistor R8 is V8.

What is the sum of the V3 + V8 ?

A) 24 V B) 18 V C) 9

D) 6 V E) 5 V

**Question 4**

In the circuit shown the figure above, R1 = 3 Ω, R2 = 5 Ω, R3 = 6 Ω, R4 = 12 Ω, R5 = 8 Ω, R6 = 8 Ω, R7 = 2 Ω, R8 = 2 Ω dur.

Voltage of the supply source of the circuit is 96 V.

Calculate the current I3 flows through the resistor R3.

A) 5.33 A B) 6.11 A C) 6.98 A

D) 8 A E) 9.6 A

**Question 5**

In a circuit consisting of series-connected resistors, R1 = 6 Ω, R2 = 3 Ω, R3 = 5 Ω, R4 = 1 Ω.

If two parallel resistors that its value of 10 Ohm are added in series to the circuit, how many amperes current are drawn from the supply source?

A) 10 B) 8 C) 6

D) 4 E) 3

**Question 6**

A circuit has been created with three parallel resistor of 12, 15 and 10 Ohm and a supply source of 36 V.

If two resistors of 3 and 2 Ohm are connects in series to this circuit, how many amperes current are drawn from the supply source?

A) 3 B) 4 C) 6

D) 8 E) 9

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November 7 2018

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