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Q. If a circuit has a total voltage of 24V and a total resistance of 6Ω, what is the total current flowing through the circuit? (2023)

A. 2A
B. 4A
C. 6A
D. 8A

Solution

Using Ohm's law, I = V/R = 24V/6Ω = 4A.

Correct Answer: B — 4A

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Q. If a circuit has a total voltage of 24V and a total resistance of 6Ω, what is the total current? (2020)

A. 2A
B. 4A
C. 6A
D. 8A

Solution

Using Ohm's law, I = V/R = 24V/6Ω = 4A.

Correct Answer: B — 4A

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Q. If a circuit has a total voltage of 24V and a total resistance of 6Ω, what is the current flowing through the circuit? (2023)

A. 4A
B. 6A
C. 8A
D. 2A

Solution

Using Ohm's law, I = V/R = 24V/6Ω = 4A.

Correct Answer: A — 4A

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Q. If a circuit has a total voltage of 24V and a total resistance of 6Ω, what is the total current in the circuit? (2022)

A. 2A
B. 4A
C. 6A
D. 8A

Solution

Using Ohm's Law, I = V/R = 24V / 6Ω = 4A.

Correct Answer: B — 4A

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Q. If a circuit has a total voltage of 24V and a total resistance of 8Ω, what is the total current flowing through the circuit? (2023)

A. 3A
B. 2A
C. 4A
D. 6A

Solution

Using Ohm's law, I = V/R = 24V/8Ω = 3A.

Correct Answer: C — 4A

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Q. If a circuit has a total voltage of 24V and a total resistance of 8Ω, what is the total current? (2020)

A. 3A
B. 2A
C. 4A
D. 6A

Solution

Using Ohm's law, I = V/R = 24V/8Ω = 3A.

Correct Answer: C — 4A

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Q. If a circuit has a total voltage of 24V and two resistors of 6Ω and 3Ω in series, what is the current flowing through the circuit?

A. 2A
B. 3A
C. 4A
D. 6A

Solution

Total resistance R_total = 6Ω + 3Ω = 9Ω. Current I = V/R = 24V / 9Ω = 2.67A.

Correct Answer: B — 3A

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Q. If a circuit has a total voltage of 24V and two resistors of 8Ω and 4Ω in series, what is the current flowing through the circuit?

A. 1A
B. 2A
C. 3A
D. 4A

Solution

Total resistance R_total = 8Ω + 4Ω = 12Ω. Using Ohm's law, I = V/R = 24V/12Ω = 2A.

Correct Answer: B — 2A

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Q. If a circuit has a total voltage of 30V and a total resistance of 15Ω, what is the total current in the circuit?

A. 1A
B. 2A
C. 3A
D. 4A

Solution

Using Ohm's law, I = V/R = 30V/15Ω = 2A.

Correct Answer: C — 3A

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Q. If a circuit has a total voltage of 50V and a total resistance of 10Ω, what is the total current flowing through the circuit? (2020)

A. 5A
B. 10A
C. 15A
D. 20A

Solution

Using Ohm's law, I = V/R = 50V/10Ω = 5A.

Correct Answer: A — 5A

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Q. If a circuit has a voltage of 12 V and a resistance of 3 ohms, what is the current flowing through the circuit? (2022)

A. 4 A
B. 3 A
C. 2 A
D. 1 A

Solution

Using Ohm's law (I = V/R), I = 12 V / 3 Ω = 4 A.

Correct Answer: A — 4 A

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Q. If a circuit has a voltage of 24 volts and a current of 6 amperes, what is the resistance?

A. 4 Ω
B. 6 Ω
C. 8 Ω
D. 12 Ω

Solution

Using Ohm's Law, R = V / I = 24 V / 6 A = 4 Ω.

Correct Answer: C — 8 Ω

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Q. If a circuit has a voltage of 24V and a current of 3A, what is the resistance? (2022)

A. 4Ω
B. 6Ω
C. 8Ω
D. 12Ω

Solution

Using Ohm's Law, R = V / I = 24V / 3A = 8Ω.

Correct Answer: B — 6Ω

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Q. If a circuit has a voltage of 24V and a current of 6A, what is the resistance? (2022)

A. 2Ω
B. 4Ω
C. 6Ω
D. 8Ω

Solution

Using Ohm's Law, R = V/I = 24V / 6A = 4Ω.

Correct Answer: D — 8Ω

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Q. If a circuit has a voltage of 30V and a total resistance of 10Ω, what is the total current flowing through the circuit?

A. 2A
B. 3A
C. 4A
D. 5A

Solution

Using Ohm's law, I = V/R = 30V/10Ω = 3A.

Correct Answer: C — 4A

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Q. If a circuit has two branches with resistances of 4Ω and 8Ω, what is the total current if the voltage across the branches is 12V?

A. 1A
B. 2A
C. 3A
D. 4A

Solution

For the 4Ω branch, I1 = V/R1 = 12V / 4Ω = 3A. For the 8Ω branch, I2 = V/R2 = 12V / 8Ω = 1.5A. Total current = I1 + I2 = 3A + 1.5A = 4.5A.

Correct Answer: B — 2A

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Q. If a circular loop of radius R carries a current I, what is the magnetic field at the center of the loop?

A. μ₀I/2R
B. μ₀I/4R
C. μ₀I/R
D. μ₀I/8R

Solution

Using Ampere's Law, B = μ₀I/2R at the center of a circular loop.

Correct Answer: A — μ₀I/2R

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Q. If a circular loop of radius R carries a current I, what is the magnetic field at the center of the loop according to Ampere's Law?

A. μ₀I/2R
B. μ₀I/4R
C. μ₀I/R
D. μ₀I/πR

Solution

The magnetic field at the center of a circular loop is given by B = (μ₀I)/(2R).

Correct Answer: A — μ₀I/2R

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Q. If a circular paper is folded in half, what shape will be visible when it is unfolded? (2020)

A. Circle
B. Ellipse
C. Semi-circle
D. Triangle

Solution

Folding a circular paper in half results in a semi-circle when unfolded.

Correct Answer: C — Semi-circle

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Q. If a city recycles 25% of its waste and produces 800 tons of waste, how much waste is recycled?

A. 200 tons
B. 150 tons
C. 250 tons
D. 300 tons

Solution

Recycled waste = 25% of 800 tons = 0.25 * 800 = 200 tons

Correct Answer: A — 200 tons

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Q. If a class is scheduled every Tuesday and Thursday, which of the following days can a student not attend without missing a class?

A. Monday
B. Wednesday
C. Friday
D. Saturday

Solution

Wednesday is the only day where a student cannot attend without missing a class.

Correct Answer: B — Wednesday

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Q. If a clock shows 3:15, what is the angle between the hour and the minute hands? (2023)

A. 45 degrees
B. 90 degrees
C. 97.5 degrees
D. 75 degrees

Solution

At 3:15, the hour hand is at 97.5 degrees (3*30 + 15*0.5) and the minute hand is at 90 degrees (15*6). The angle between them is 97.5 - 90 = 7.5 degrees.

Correct Answer: C — 97.5 degrees

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Q. If a coil with a resistance of 10 ohms has an induced EMF of 20 volts, what is the induced current?

A. 2 A
B. 0.5 A
C. 10 A
D. 20 A

Solution

Using Ohm's law (I = V/R), the induced current I = 20V / 10Ω = 2 A.

Correct Answer: A — 2 A

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Q. If a coin is tossed twice, what is the probability of getting at least one head?

A. 1/4
B. 1/2
C. 3/4
D. 1

Solution

Total outcomes = 4 (HH, HT, TH, TT). Outcomes with at least one head = 3. Probability = 3/4.

Correct Answer: C — 3/4

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Q. If a college awards a scholarship of $1500 to the top 10% of students, and there are 200 students in total, how many students will receive the scholarship? (2023)

A. 15
B. 20
C. 25
D. 30

Solution

Number of students receiving scholarship = 10% of 200 = 20 students.

Correct Answer: B — 20

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Q. If a committee of 3 is to be formed from 5 people, how many different committees can be formed?

A. 10
B. 15
C. 20
D. 5

Solution

The number of ways to choose 3 people from 5 is given by 5C3 = 10.

Correct Answer: B — 15

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Q. If a committee of 3 members is to be formed from a group of 5 people, how many different committees can be formed?

A. 10
B. 15
C. 5
D. 20

Solution

The number of ways to choose 3 members from 5 is given by 5C3 = 10.

Correct Answer: A — 10

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Q. If a company allocates its budget primarily to marketing rather than research and development, which of the following is a potential risk?

A. Increased brand awareness.
B. Short-term sales growth.
C. Neglecting innovation and long-term growth.
D. Higher customer engagement.

Solution

Focusing on marketing at the expense of R&D can lead to neglecting innovation, which is a long-term risk, making option 2 the correct choice.

Correct Answer: C — Neglecting innovation and long-term growth.

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Q. If a company implements a four-day workweek, which of the following can be inferred?

A. Employee productivity will definitely increase.
B. All employees will prefer a four-day workweek.
C. Some employees may find a four-day workweek beneficial.
D. The company will save money with fewer workdays.

Solution

While the change may benefit some employees, it does not guarantee that all will find it advantageous.

Correct Answer: C — Some employees may find a four-day workweek beneficial.

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Q. If a company increases its workforce by 30% and the original workforce was 200, what is the new workforce?

A. 240
B. 260
C. 280
D. 300

Solution

New workforce = 200 + (30/100 * 200) = 200 + 60 = 260.

Correct Answer: B — 260

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Major Competitive Exams

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