PRACTICE-REVIEW Flashcards
CM3-5
Which of the following is/are correct about Electric
Current?
I. Flow of protons through conductive medium
II. Current is equal to Coulombs/second
III. Ampere (A) is the SI unit of Electric Current
A.I
B. I and II
C. II and III
D. I, II, and III
C. II and III
Which of the following affecting the Electrical
Resistance?
I. Cross-sectional area of the conductor
II. Length of the conductor
III. Material of the conductor
A.I
B. I and II
C. I and III
D. I, II, and III
D. I, II, and III
Which of the following is/are correct about
Capacitance
I. C will depend on the construction of the Capacitor
II.As the Voltage goes up, the Charge goes up also
III.Device for storing electrical charge, consisting of
two conductors in close proximity and insulated
from each other.
A.I
B. I and II
C. I and III
D. I, II, and III
B. I and II
What is the SI unit of the opposition of the electric
current in a circuit?
A. Ampere (A) B. Voltage (V) C. Farads (F) D. Ohm (Ω
D. Ohm (Ω
Which of the following is/are correct about Alternating
Current (AC)?
I. Reveres it direction many times a second at regular
intervals
II. Flowing in one direction only
III. Use in Power Transmission
A.I
B. I and II
C. I and III
D. I, II, and III
C. I and III
Which of the following is true about Ohm’s Law?
I. Voltage is equal to the product of Current and Resistance
II. Voltage is directly proportional to the Current
III. Current is inversely proportional to the Resistance
A.I
B. I and II
C. I and III
D. I, II, and III
D. I, II, and III
Which of the following is/are correct way to increase the
capacitance of a capacitor.
I. Increase the Voltage so that Charge will also increase
II.Increase the area of the plate of Capacitor
III. Decrease the separation between the plates.
A.I
B. I and II
C. II and III
D. I, II, and III
C. II and III
Which of the following is NOT true about Parallel arrangement of Capacitors?
A.Voltage is equal across the circuit
B. Charge is equal across the circuit
C. 𝐶𝑒𝑞 = 𝐶1 + 𝐶2 + 𝐶3 + ⋯ + 𝐶𝑛
𝐷. 𝐶ℎ𝑎𝑟𝑔𝑒 (𝑄) 𝑖𝑠 𝑒𝑞𝑢𝑎𝑙 𝑡𝑜 𝑡ℎ𝑒 𝑝𝑟𝑜𝑑𝑢𝑐𝑡 𝑜𝑓 𝐶𝑎𝑝𝑎𝑐𝑖𝑡𝑎𝑛𝑐𝑒 𝐶 𝑎𝑛𝑑 𝑉𝑜𝑙𝑡𝑎𝑔𝑒 (𝑉)
B. Charge is equal across the circuit
Which of the following is NOT true about Series
arrangement of Resistors?
A.Voltage is equal across the circuit
B. Current is equal across the circuit
C. 𝑅𝑡= 𝑅1 + 𝑅2 + 𝑅3 + …
D. The Kirchhoff Law is applicable to use in finding the
total resistance
Voltage is equal across the circuit
An electric current of 2 amperes flows through a
copper wire for a duration of 1 hour. Calculate the total
quantity of electric charge, in coulombs, that passes
through a cross-sectional point in the copper wire during
the 1-hour interval.
A. 7200 C
B. 3600 C
C. 120 C
D. 240 C
A. 7200 C
A current of 0.35A flows in a copper wire for 30
minutes. How many electrons pass through the copper
wire?
A. 630
B. 10.5
C. 3.94 X 10^21
D. 3.94 X 10^-21
C. 3.94 X 10^21
A 12V battery is connected to a light bulb and draws
220mA of current. How much power does it consume?
A.2640 W
B. 264 W
C. 26.4 W
D. 2.64 W
D. 2.64 W
The Capacitance (C) of a capacitor is equal to 2.2125 x 10-14. If the separation distance of two square plates is equal to 1m. What is the measure of the side of square plate?
A. 50cm
B. 5cm
C. 5m
D. 0.5m
B. 5cm
What will happen to the capacitance if you are going
to increase the distance between the 2 parallel plate of
capacitor?
A. Increase
B. Decrease
C. Remains Constant
D. Indefinite pattern occurs
B. Decrease
The electric current of a circuit is 10A with the potential difference 12V. What must be the value of resistance to decrease the electric current by 2A.
A. 0.83 ohms
B. 0.67 ohms
C. 1.2 ohms
D. 1.5 ohms
D. 1.5 ohms
