Major Competitive Exams

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Major Competitive Exams

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Major Competitive Exams MCQ & Objective Questions

Major Competitive Exams play a crucial role in shaping the academic and professional futures of students in India. These exams not only assess knowledge but also test problem-solving skills and time management. Practicing MCQs and objective questions is essential for scoring better, as they help in familiarizing students with the exam format and identifying important questions that frequently appear in tests.

What You Will Practise Here

Key concepts and theories related to major subjects
Important formulas and their applications
Definitions of critical terms and terminologies
Diagrams and illustrations to enhance understanding
Practice questions that mirror actual exam patterns
Strategies for solving objective questions efficiently
Time management techniques for competitive exams

Exam Relevance

The topics covered under Major Competitive Exams are integral to various examinations such as CBSE, State Boards, NEET, and JEE. Students can expect to encounter a mix of conceptual and application-based questions that require a solid understanding of the subjects. Common question patterns include multiple-choice questions that test both knowledge and analytical skills, making it essential to be well-prepared with practice MCQs.

Common Mistakes Students Make

Rushing through questions without reading them carefully
Overlooking the negative marking scheme in MCQs
Confusing similar concepts or terms
Neglecting to review previous years’ question papers
Failing to manage time effectively during the exam

FAQs

Question: How can I improve my performance in Major Competitive Exams?
Answer: Regular practice of MCQs and understanding key concepts will significantly enhance your performance.

Question: What types of questions should I focus on for these exams?
Answer: Concentrate on important Major Competitive Exams questions that frequently appear in past papers and mock tests.

Question: Are there specific strategies for tackling objective questions?
Answer: Yes, practicing under timed conditions and reviewing mistakes can help develop effective strategies.

Start your journey towards success by solving practice MCQs today! Test your understanding and build confidence for your upcoming exams. Remember, consistent practice is the key to mastering Major Competitive Exams!

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Q. If a circuit has a 12V battery and two resistors of 4 ohms and 8 ohms in series, what is the voltage across the 8 ohm resistor?

A. 4 V
B. 8 V
C. 6 V
D. 12 V

Solution

The total resistance is 4 + 8 = 12 ohms. The current is I = V/R = 12V / 12 ohms = 1 A. The voltage across the 8 ohm resistor is V = I * R = 1 A * 8 ohms = 8 V.

Correct Answer: B — 8 V

Q. If a circuit has a 15V battery and two resistors (5Ω and 10Ω) in series, what is the voltage across the 10Ω resistor?

A. 5V
B. 10V
C. 15V
D. 0V

Solution

Using the voltage divider rule, V2 = (R2 / (R1 + R2)) * Vtotal = (10 / (5 + 10)) * 15 = 10V.

Correct Answer: B — 10V

Q. If a circuit has a 15V battery and two resistors (R1 = 5Ω, R2 = 10Ω) in series, what is the voltage across R2?

A. 10V
B. 5V
C. 15V
D. 0V

Solution

Voltage across R2 = (R2 / (R1 + R2)) * V = (10Ω / (5Ω + 10Ω)) * 15V = 10V.

Correct Answer: A — 10V

Q. If a circuit has a 15V battery and two resistors of 5Ω and 10Ω in series, what is the power dissipated by the 10Ω resistor?

A. 1.5W
B. 2.5W
C. 3.75W
D. 5W

Solution

Total resistance R = 5Ω + 10Ω = 15Ω. Current I = V/R = 15V/15Ω = 1A. Power P = I^2 * R = 1^2 * 10 = 10W.

Correct Answer: C — 3.75W

Q. If a circuit has a 24V battery and two resistors of 6Ω and 12Ω in series, what is the voltage across the 12Ω resistor?

A. 8V
B. 12V
C. 16V
D. 18V

Solution

Using the voltage divider rule, V2 = (R2 / (R1 + R2)) * Vtotal = (12 / (6 + 12)) * 24 = 16V.

Correct Answer: B — 12V

Q. If a circuit has a 9V battery and two resistors of 3Ω and 6Ω in series, what is the voltage across the 6Ω resistor?

A. 3V
B. 6V
C. 9V
D. 4.5V

Solution

Using the voltage divider rule, V6Ω = (R6Ω / (R3Ω + R6Ω)) * Vtotal = (6 / (3 + 6)) * 9 = 6V.

Correct Answer: B — 6V

Q. If a circuit has a current of 0.5 A and a resistance of 20 ohms, what is the voltage?

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

Solution

Using Ohm's Law, V = I * R = 0.5 A * 20 Ω = 10 V.

Correct Answer: A — 10 V

Q. If a circuit has a current of 2 A flowing through a resistor of 5 ohms, what is the voltage across the resistor?

A. 5 V
B. 10 V
C. 2 V
D. 1 V

Solution

Using Ohm's Law, V = I * R. Here, V = 2 A * 5 ohms = 10 V.

Correct Answer: B — 10 V

Q. If a circuit has a current of 2A flowing through a 5Ω resistor, what is the power dissipated by the resistor?

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

Solution

Power (P) = I^2 * R = (2^2) * 5 = 4 * 5 = 20W.

Correct Answer: B — 10W

Q. If a circuit has a current of 2A flowing through a 5Ω resistor, what is the voltage across the resistor?

A. 10V
B. 5V
C. 2.5V
D. 1V

Solution

Using Ohm's Law, V = I * R = 2A * 5Ω = 10V.

Correct Answer: A — 10V

Q. If a circuit has a current of 3 A and a resistance of 4 ohms, what is the power consumed? (2020)

A. 12 W
B. 7 W
C. 15 W
D. 9 W

Solution

Power (P) is calculated using P = I^2 * R = (3 A)^2 * 4 ohms = 12 W.

Correct Answer: A — 12 W

Q. If a circuit has a current of 3 A and a resistance of 4 ohms, what is the voltage across the circuit?

A. 7 V
B. 12 V
C. 15 V
D. 20 V

Solution

Using Ohm's Law, V = IR = 3 A * 4 Ω = 12 V.

Correct Answer: B — 12 V

Q. If a circuit has a current of 3 A and a resistance of 4 Ω, what is the power consumed? (2020)

A. 12 W
B. 7 W
C. 3 W
D. 1 W

Solution

Power (P) can be calculated using P = I² × R = (3 A)² × 4 Ω = 12 W.

Correct Answer: A — 12 W

Q. If a circuit has a current of 3A flowing through a 10Ω resistor, what is the power dissipated by the resistor?

A. 30W
B. 10W
C. 90W
D. 15W

Solution

Power (P) = I^2 * R = 3^2 * 10 = 9 * 10 = 90W.

Correct Answer: A — 30W

Q. If a circuit has a current of 3A flowing through a 5Ω resistor, what is the power dissipated by the resistor?

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

Solution

Power (P) = I^2 * R = (3A)^2 * 5Ω = 9 * 5 = 45W.

Correct Answer: C — 15W

Q. If a circuit has a current of 3A flowing through a 5Ω resistor, what is the power dissipated in the resistor?

A. 15W
B. 9W
C. 5W
D. 3W

Solution

Power (P) = I^2 * R = (3A)^2 * 5Ω = 9A^2 * 5Ω = 45W.

Correct Answer: A — 15W

Q. If a circuit has a current of 5 A and a resistance of 10 ohms, what is the voltage across the circuit? (2019)

A. 15 V
B. 50 V
C. 5 V
D. 10 V

Solution

Using Ohm's Law, V = I * R = 5 A * 10 Ω = 50 V.

Correct Answer: B — 50 V

Q. If a circuit has a current of 5 A and a resistance of 10 Ω, what is the power consumed in the circuit?

A. 50 W
B. 25 W
C. 10 W
D. 5 W

Solution

Power (P) can be calculated using P = I^2 * R = (5 A)^2 * 10 Ω = 25 A^2 * 10 Ω = 250 W.

Correct Answer: A — 50 W

Q. If a circuit has a current of 5 A and a resistance of 10 Ω, what is the voltage?

A. 50 V
B. 5 V
C. 10 V
D. 15 V

Solution

Using Ohm's Law, V = I * R = 5 A * 10 Ω = 50 V.

Correct Answer: A — 50 V

Q. If a circuit has a current of 5 amperes and a resistance of 10 ohms, what is the voltage?

A. 50 volts
B. 5 volts
C. 10 volts
D. 15 volts

Solution

Using Ohm's Law, V = I * R = 5 A * 10 Ω = 50 V.

Correct Answer: A — 50 volts

Q. If a circuit has a current of 5A and a resistance of 10Ω, what is the voltage across the resistor? (2022)

A. 10V
B. 20V
C. 30V
D. 50V

Solution

Using Ohm's Law, V = I * R = 5A * 10Ω = 50V.

Correct Answer: B — 20V

Q. If a circuit has a current of 5A flowing through a 10Ω resistor, what is the power dissipated by the resistor?

A. 25W
B. 50W
C. 75W
D. 100W

Solution

Power (P) = I^2 * R = 5^2 * 10 = 25 * 10 = 250W.

Correct Answer: B — 50W

Q. If a circuit has a current of 5A flowing through a resistor of 10Ω, what is the voltage across the resistor?

A. 5V
B. 10V
C. 15V
D. 50V

Solution

Using Ohm's Law (V = IR), the voltage is V = 5A * 10Ω = 50V.

Correct Answer: B — 10V

Q. If a circuit has a resistance of 12Ω and a current of 3A, what is the power consumed in the circuit? (2022)

A. 36W
B. 24W
C. 12W
D. 9W

Solution

Power (P) can be calculated using the formula P = I^2 * R = (3A)^2 * 12Ω = 36W.

Correct Answer: A — 36W

Q. If a circuit has a resistance of 5 ohms and a current of 2 A, what is the voltage? (2014)

A. 10 V
B. 5 V
C. 2 V
D. 1 V

Solution

Using Ohm's Law, V = I × R = 2 A × 5 Ω = 10 V.

Correct Answer: A — 10 V

Q. If a circuit has a resistance of 5 ohms and a current of 2 amperes, what is the voltage across the circuit?

A. 10 V
B. 5 V
C. 2 V
D. 1 V

Solution

Using Ohm's Law (V = I * R), V = 2 A * 5 Ω = 10 V.

Correct Answer: A — 10 V

Q. If a circuit has a total current of 3 A and a total resistance of 6 ohms, what is the voltage supplied by the battery?

A. 9 V
B. 6 V
C. 3 V
D. 12 V

Solution

Using Ohm's law, V = I * R, we have V = 3 A * 6 ohms = 18 V.

Correct Answer: A — 9 V

Q. If a circuit has a total current of 5 A and a total resistance of 10 ohms, what is the voltage across the circuit?

A. 50 V
B. 5 V
C. 10 V
D. 2 V

Solution

Using Ohm's law, V = I * R, we have V = 5 A * 10 ohms = 50 V.

Correct Answer: A — 50 V

Q. If a circuit has a total current of 5A and a total resistance of 10Ω, what is the total voltage supplied by the battery?

A. 25V
B. 50V
C. 75V
D. 100V

Solution

Using Ohm's Law, V = I * R = 5A * 10Ω = 50V.

Correct Answer: B — 50V

Q. If a circuit has a total power of 100W and a voltage of 50V, what is the current flowing through the circuit? (2023)

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

Solution

Using the power formula P = VI, I = P/V = 100W/50V = 2A.

Correct Answer: B — 2A

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