DC ELECTRIC CIRCUITS PROBLEMS

What do you expect when you use the two 20 kohms, 1 watt resistor in parallel instead of one 10 kohms, 1 watt?

• Provide lighter current

• Provide wider tolerance

• Provide more power

• Provide less power

The total resistance of a two similar wire conductors connected in parallel is

• same resistance of one wire

• double the resistance of one wire

• one half the resistance of one wire

• resistance of one wire multiplied by 4

When you increase the resistance in a circuit, the flow of electrons will

• be constant

• flow faster

• be stopped

• be decreased

Which of the following allows more current if applied to the same voltage?

• 0.002 siemen

• 25 ohms

• 0.004 siemen

• 2.5 ohms

Ohm’s law refers to _____.

• power is directly proportional to both voltage squared and the resistance

• power is directly proportional to the resistance and inversely as the current squared

• current varies directly as the voltage and inversely as the resistance

• current is directly proportional to both voltage

A circuit which a break exists in the complete conduction pathway

• Open circuit

• Short circuit

• Close circuit

• Circuit

How much is the equivalent power in watts can a 3 horse power provide?

• 3000 watts

• 248.66 watts

• 1492 watts

• 2238 watt

The current needed to operate a soldering iron which has a rating of 600 watts at 110 volts

• 18,200 A

• 0.182 A

• 66,000 A

• 5.455 A

Find the power across the resistor of 5 ohms delivered from a battery of an internal resistance of 3 ohms and a constant emf of 4 volts.

• 120 watts

• 100 watts

• 60 watts

• 1.25 watts

A series circuit in which desired portions of the source voltage may be tapped off for use equipment.

• Voltage trap

• Voltage selector

• Voltage divider

• Dividing network