If the frequency of an AC Power Supply is 50Hz, it's Time Period is ______

• 20ms

• 10ms

• 1ms

• 50ms

A node is junction of two or more branches of an electrical network.

• True

• False

Which of the following equation is correct regarding the following circuit diagram?

I. At node 'a' ,i1 + i4 = i2

2. At node 'c', i5 = i6 + i7

3. 3. At node 'b', i2 + i3 = i5

• Only I

• Only 1 & 2

• Only 1 & 3

• 1, 2 & 3

A voltage of 6 V causes a current of 0.6 A to flow in a conductor. Calculate

the resistance of the conductor

• 10 ohms

• 5 ohms

• 6 ohms

• 3.6 ohms

What is the unit of electrical resistance?

• Ohm

• Volt

• Ampere

• Watt

In a series circuit, the total resistance is equal to ______

• The sum of individual resistances

• The product of individual resistances

• The average of individual resistances

• The maximum of individual resistances

Which of the following statements is true regarding Kirchhoff's Voltage Law?

I. The sum of the voltages around any closed loop in a circuit is zero.

II. The total current entering a junction must equal the total current leaving the junction.

• Only I

• Only II

• Both I and II

• Neither I nor II

A current of 3 A flows through a 10 Ω resistor. Find: (a) the power dissipated by the resistor; (b) the energy dissipated in 5 hours.

• 90W and 450Wh

• 90W and 500Wh

• 30W and 450Wh

• 30W and 500Wh

The lamps in a set of Christmas tree lights are connected in series; if there are

20 lamps and each lamp has a resistance of 25 Ω, calculate the equivalent resistance of the set of

lamps, and hence calculate the current taken from a 230 V supply.

• 0.46A

• 1A

• 1.46A

• 2A

In a parallel-configured circuit, the current value is:

• high

• low

• zero

• infinity