Q. In a circuit, if the voltage is 24V and the current is 3A, what is the resistance? (2023)
Show solution
Solution
Using Ohm's Law, R = V / I = 24V / 3A = 8Ω.
Correct Answer: B — 6Ω
Learn More →
Q. What happens to the current in a circuit if the voltage is increased while keeping the resistance constant? (2023)
A.
It decreases
B.
It increases
C.
It remains the same
D.
It becomes zero
Show solution
Solution
According to Ohm's Law, if the voltage increases while resistance remains constant, the current will also increase.
Correct Answer: B — It increases
Learn More →
Q. What happens to the current in a circuit if the voltage is increased while the resistance remains constant? (2021)
A.
The current decreases
B.
The current increases
C.
The current remains the same
D.
The current becomes zero
Show solution
Solution
According to Ohm's Law, if the voltage (V) increases while resistance (R) remains constant, the current (I) will increase.
Correct Answer: B — The current increases
Learn More →
Q. What happens to the current in a circuit if the voltage is tripled while the resistance remains constant? (2023)
A.
It triples.
B.
It halves.
C.
It remains the same.
D.
It increases by a factor of nine.
Show solution
Solution
According to Ohm's Law, if the voltage (V) is tripled and resistance (R) remains constant, the current (I) will also triple (I = V/R).
Correct Answer: A — It triples.
Learn More →
Q. What happens to the total resistance in a parallel circuit when more resistors are added? (2019)
A.
It increases
B.
It decreases
C.
It remains the same
D.
It becomes infinite
Show solution
Solution
In a parallel circuit, adding more resistors decreases the total resistance because the total resistance is given by 1/R_total = 1/R1 + 1/R2 + ...
Correct Answer: B — It decreases
Learn More →
Q. What is the relationship between voltage, current, and resistance as described by Ohm's Law? (2021)
A.
V = I + R
B.
V = I * R
C.
V = I / R
D.
V = R / I
Show solution
Solution
Ohm's Law states that the voltage (V) across a conductor is directly proportional to the current (I) flowing through it, with the resistance (R) being the constant of proportionality. Therefore, V = I * R.
Correct Answer: B — V = I * R
Learn More →
Q. What is the relationship between voltage, current, and resistance as stated by Ohm's Law? (2021)
A.
V = I + R
B.
V = I * R
C.
V = I / R
D.
V = R / I
Show solution
Solution
Ohm's Law states that the voltage (V) across a conductor is directly proportional to the current (I) flowing through it, with the resistance (R) being the constant of proportionality. Therefore, V = I * R.
Correct Answer: B — V = I * R
Learn More →
Q. Which of the following materials is considered a good conductor of electricity? (2022)
A.
Rubber
B.
Copper
C.
Wood
D.
Glass
Show solution
Solution
Copper is a good conductor of electricity due to its low resistance and high conductivity.
Correct Answer: B — Copper
Learn More →
Q. Which of the following statements is true according to Ohm's Law? (2019)
A.
Resistance is independent of temperature
B.
Voltage is inversely proportional to current
C.
Current is directly proportional to voltage
D.
Resistance increases with increasing current
Show solution
Solution
According to Ohm's Law, current (I) is directly proportional to voltage (V) when resistance (R) is constant.
Correct Answer: C — Current is directly proportional to voltage
Learn More →
Showing 31 to 39 of 39 (2 Pages)
