Electrical and Electronic Technology Quiz( Form Four)

1. The colour code of a 47 KΩ resistor

• Yellow,violet,orange

• Yellow,orange, violet

• Orange,violet,orange

• Violet,orange,violet

1. Three resistance, each 21Ω are connected in series. The total resistance is:

• 7.Ω

• 63Ω

• 21Ω

• 24Ω

An electrical appliance is rated at 600 W. How much electrical energy will it use in 4 sec?

• 24 joules

• 2.4 KJoules

• 125 W

• 125 KW

1. The colour code of a 220Ω resistor with a 5% tolerance is:

• Red red brown gold

• Red red brown silver

• Red red black gold

• Red red black silver

An electrical appliance is rated at 500 W. In 10 Sec the electrical energy used is:

• 500 Joules

• 0.5 Joules

• 50 Joules

• 5 KJoules

1. A lamp uses 2.5 K joules in 25 seconds. Its power is:

• 250 W

• 80 W

• 30 W

• 100 W

The opposition to the movement of electrons is called:

• resistance

• current

• potential

• charge

If two resistors are connected in series, their total resistance will be:

• less than the value of either resistor

• the sum of the two resistor values

• the difference of the two resistor values

• the product of the two resistor values

Two resistors with the values 3 Ω and 6 Ω are connected in parallel. What is their combined resistance?

• 9 Ω

• 18 Ω

• 3 Ω

• 2 Ω

Three resistors with the values 3 Ω, 12 Ω, and 6 Ω respectively are connected in series. What is their combined resistance?

• 15 Ω

• 6 Ω

• 1.7 Ω

• 21 Ω