Q. If the voltage across a resistor is increased from 5V to 10V, what happens to the current through the resistor if the resistance is constant? (2021)
A.
It doubles
B.
It halves
C.
It remains the same
D.
It quadruples
Solution
According to Ohm's law, if voltage increases and resistance remains constant, current will also increase proportionally.
Current Electricity - Circuits MCQ & Objective Questions
Understanding "Current Electricity - Circuits" is crucial for students preparing for school and competitive exams in India. This topic not only forms a significant part of the syllabus but also features prominently in various objective questions and MCQs. By practicing these questions, students can enhance their grasp of concepts and improve their exam scores.
What You Will Practise Here
Fundamental concepts of current, voltage, and resistance
Ohm's Law and its applications in circuit analysis
Series and parallel circuits: characteristics and calculations
Kirchhoff's laws: current and voltage rules
Power calculations in electrical circuits
Understanding circuit diagrams and symbols
Real-life applications of current electricity in everyday devices
Exam Relevance
The topic of "Current Electricity - Circuits" is integral to the curriculum of CBSE, State Boards, NEET, and JEE. Students can expect questions that test their understanding of basic principles, as well as their ability to apply these concepts in problem-solving scenarios. Common question patterns include numerical problems, conceptual MCQs, and diagram-based questions that require a clear understanding of circuit configurations.
Common Mistakes Students Make
Confusing series and parallel circuits, especially in calculations
Misapplying Ohm's Law in complex circuits
Overlooking the significance of units in electrical measurements
Failing to interpret circuit diagrams accurately
FAQs
Question: What is Ohm's Law? Answer: Ohm's Law states that the current through a conductor between two points is directly proportional to the voltage across the two points, expressed as V = IR.
Question: How do series and parallel circuits differ? Answer: In a series circuit, components are connected end-to-end, so the same current flows through all components. In a parallel circuit, components are connected across the same voltage source, allowing multiple paths for current.
Start your journey towards mastering "Current Electricity - Circuits" by solving practice MCQs today. Test your understanding and boost your confidence for upcoming exams!
Soulshift Feedback×
On a scale of 0–10, how likely are you to recommend
The Soulshift Academy?
