Electricity Final Exam, Students

A capacitor is an electrical device which consists of two conducting plates of metal separated by an insulating material called a dielectric.

• True

• False

Find the total power PT if the R1= 5, and R2= 10, and VT= 60

• 250 W

• 230 W

• 240 W

• 210 W

OPEN CIRCUITS are

• Get effect of high resistance that results in no current flow in the circuit.

• When there is an open in one branch, only that branch will have no current.

• A and B

• NonE of the above

What are the main components of an electric circuit?

• Battery, bulb, wires, and switch.

• Battery, grounding, and capacitor.

• Battery, wires, and switch

• Wires, switch, resistors.

Find the power used by a 12 kΩ resistor drawing 2 W- 24 ohms- 24 W*.- 6 W

• 41 W

• 24 W

• 6 W

A device that measures the size of an electric current ONLY, and the reading from the meter is in units of ampere.-

• Capacitor

• Ammeter

• Digital multimeter

• Electric power.

Safety Device that protects electrical equipment against voltage spikes. *Circuit Breakers

• Protective relays.

• Surge protector

• Fuses

• Circuit Breakers

A ……  is a simple metal strip or wire that melts when it’s exposed to high levels of electricity.

• Protective relays

• Surge protector

• Fuses

• Circuit Breakers

identify the safey device in the picture.

• Fuse.

• Circuit Breaker.

• Ground Fault Circuit Intrrupters.

• Surge Protector.

What is the charge taken on by a 3 F capacitor at 3 V?

• 0 C

• 6 C

• 9 C

• 1 C