Q3 Periodical Exam

Question 1

It is the amount of energy consumed per unit/time

Answer 1

Electric Power

Question 2

What is the unit for electric power?

Answer 2

Watt or J/s

Question 3

1hp is equal to ____

Answer 3

745.7 W or 0.75kW

Question 4

If you increase the voltage by n, the power will increase by _____

Answer 4

n^2

Question 5

If you increase the resistance by n, the power will decrease by ____

Answer 5

n or 1/n

Question 6

If you increase the current by n, the power will increase by ______

Answer 6

n^2

Question 7

If one component burns up, the rest will not function

Answer 7

Series

Question 8

How do you compute a series circuit?

Answer 8

Voltage - Summation of individual voltage
Current - Equal
Resistance - Summation of individual resistance

Question 9

How do you compute a parallel circuit?

Answer 9

Voltage - Equal
Current - Summation of individual current
Resistance - Reciprical of the summation of reciprocal of individual resistance

Question 10

It is a device that stores electric charge

Answer 10

Capacitor

Question 11

It is the ratio of charge on one plate and the potential difference between them

Answer 11

Capacitance

Question 12

What is the unit for capacitance?

Answer 12

Farads or Coulumb/Volts

Question 13

Area increases

Answer 13

Capacitance increases

Question 14

Area decreases

Answer 14

Capacitance decreases

Question 15

Distance increases

Answer 15

Capacitance decreases

Question 16

Distance decreases

Answer 16

Capacitance increases

Question 17

It is a material that doesn’t allow current to flow thus increases the capacitance.

Answer 17

Dielectric

Question 18

It is a polarized capacitor

Answer 18

Electrolytic

Question 19

It is a non-polarized capacitor

Answer 19

Non-electrolytic

Question 20

What is the energy stored in a capacitor?

Answer 20

Electric Potential Energy

Question 21

What will happen if the capacitor is connected to the circuit and we increase the area?

Answer 21

Capacitance, charge, and energy increases, while the voltage is constant

Question 22

What will happen if the capacitor is connected to the circuit and we decrease the area?

Answer 22

Capacitance, charge, and energy decreases, while the voltage is constant

Question 23

What will happen if the capacitor is connected to the circuit and we increase the distance?

Answer 23

Capacitance, charge, and energy decreases, while the voltage is constant

Question 24

What will happen if while the capacitor is connected to the circuit and we decrease the distance?

Answer 24

Capacitance, charge, and energy increases, while the voltage is constant

Question 25

What will happen if the capacitor is connected to the circuit and we decrease the distance?

Answer 25

Capacitance, charge, and energy increases, while the voltage is constant

Question 26

What will happen if the capacitor is disconnected to the circuit and we increase the area?

Answer 26

Capacitance increases, energy and voltage decreases, while the charge is constant

Question 27

What will happen if the capacitor is disconnected to the circuit and we decrease the area?

Answer 27

Capacitance decreases, energy and voltage increases, while the charge is constant

Question 28

What will happen if the capacitor is disconnected to the circuit and we increase the area?

Answer 28

Capacitance decreases, energy and voltage increases, while the charge is constant

Question 29

What will happen if the capacitor is disconnected to the circuit and we increase the area?

Answer 29

Capacitance increases, energy and voltage decreases, while the charge is constant

Question 30

What will happen if a dielectric is inserted while connected to the battery?

Answer 30

Capacitance, stored charge, stored energy increases, while the voltage is constant

Question 31

What will happen if a dielectric is inserted while disconnected to the battery?

Answer 31

Capacitance increases, energy and voltage decreases, while the charge is constant

Question 32

It is used for a person suffering a cardiac attack

Answer 32

Heart Defibrillators

Question 33

How do you solve a parallel capacitor?

Answer 33

Capacitance - Summation of individual capacitance Voltage - Equal Charge - Summation of individual charge

Question 34

How do you solve a series capacitor?

Answer 34

Capacitance - Reciprocal of the summation of reciprocal of individual capacitance Voltage - Summation of individual voltage Charge - Equal