**Question 1**:

Draw a parallel circuit using three bulbs, a dry cell, a switch and several connecting wires.

**Answer**:

**Question 2**:

Based on Figure 1, calculate:

(a) the effective resistance

(b) the current in the circuit

(c) the voltage across each resistor

**Answer**:

**(a)**

R = 1 Ω + 3 Ω + 5 Ω

= 9 Ω

**(b)**

\(I=\frac{9 \mathrm{~V}}{9 \Omega}=1 \mathrm{~A}\)

**(c)**

**1 Ω Resistor**

V = 1 A x 1 Ω

= 1 V

**3 Ω Resistor**

= 1 A x 3 Ω

= 3 V

**5 Ω Resistor**

V = 1 A x 5 Ω

= 5 V

**Question 3**:

Based on Figure 2, calculate:

(a) the effective resistance

(b) the voltage

(c) the current flowing through each resistor

**Answer**:

**(a)**R = 2 Ω

**(b)**V = 4 V

**(c)**

**Current in 3 Ω Resistor**

\(\begin{aligned} I & =\frac{4 \mathrm{~V}}{3 \Omega} \\ & =1.3 \mathrm{~A}\end{aligned}\)

**Current in 6 Ω Resistor**

\(\begin{aligned} I & =\frac{4 \mathrm{~V}}{6 \Omega} \\ & =0.67 \mathrm{~A}\end{aligned}\)