Resistance and Power MCQs

Question 1

The source is 24 volts and the load resistance is 100 . What is the load current?

Accepted Answer

240 mA

Answer

2.4 A

Answer

24 mA

Answer

2.4 mA

Question 2

Resistors are identified as to wattage by:

Accepted Answer

size

Answer

color code

Answer

types of materials

Answer

internal construction

Question 3

What type of resistors have a tolerance rating of 5% or greater?

Accepted Answer

general-purpose

Answer

precision

Answer

SIP

Answer

wirewound

Question 4

Resistor tolerance is either printed on the component, or is provided by:

Accepted Answer

color code

Answer

keyed containers

Answer

size

Answer

ohmmeter reading

Question 5

How many connections does a rheostat have?

Accepted Answer

2

Answer

1

Answer

3

Answer

4

Question 6

What are the parts of a rheostat?

Accepted Answer

wiper and resistor track

Answer

solenoid and armature

Answer

contact and wire wound

Answer

center tape and wiper

Question 7

The load resistance increases. How will the load current change?

Accepted Answer

decrease

Answer

vary

Answer

remain constant

Answer

increase

Question 8

What is the power dissipated by a 1.2 komega.gif resistor with 12 volts across it?

Accepted Answer

.12 W

Answer

12 W

Answer

1.2 W

Answer

12 mW

Question 9

How many joules of energy will a 10 W lamp dissipate in one minute?

Accepted Answer

600 joules

Answer

10 joules

Answer

60 joules

Answer

3600 joules