Current Electricity — Practice Quiz
Maharashtra Board · Class 9 · Science
Try a 4-question quiz on Current Electricity for Maharashtra Board Class 9 Science: tap an answer to check it and see why.
Interactive on Super Tutor
Studying Current Electricity? Get the full interactive chapter.
Quizzes, flashcards, AI doubt-solver and a step-by-step study plan — built for practice quiz and more.
Free trial, no card needed.
Quick Quiz: Current Electricity
0/4Tap an answer to check it instantly. No sign-up needed for these 4.
What is the SI unit of electric current?
According to Ohm's law, if the potential difference across a conductor is doubled while keeping temperature constant, what happens to the current?
What is the formula for calculating electric current?
In a series combination of resistors, which quantities are the same for all resistors?
Sample Questions
Which of the following are good conductors of electricity?
Show answer
Copper wire, Aluminum wire, Silver
Metals like copper, aluminum, and silver are good conductors because they have free electrons that can move easily. Glass and rubber are insulators with very high resistance and do not allow current to flow easily.
The potential difference between two points is 12V. If 3C of charge flows between these points, how much work is done?
Show answer
36 J
Work done = Charge × Potential difference. W = Q × V = 3C × 12V = 36J. This formula comes from the definition of potential difference as work done per unit charge.
What is the effective resistance when three 6Ω resistors are connected in series?
Show answer
18 Ω
In series combination, effective resistance = R₁ + R₂ + R₃ = 6Ω + 6Ω + 6Ω = 18Ω. Series connection increases the total resistance.
Which wire in domestic electrical connections brings current to our homes?
Show answer
Live wire
The live wire (red or brown insulation) brings current to our homes. The neutral wire (blue or black) returns the current, and the earth wire (yellow or green) is for safety purposes.
+41 more questions on Current Electricity (Maharashtra Board Class 9 Science)
Practise AllFrequently Asked Questions
What are the important topics in Current Electricity for Maharashtra Board Class 9 Science?
How many practice questions are there for Current Electricity?
Sources & Official References
Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.
More resources for Current Electricity
For serious students
Get the full Current Electricity chapter — start free.
Quizzes, flashcards, an AI doubt solver and a study plan for Maharashtra Board Class 9 Science. Free to start, no card needed.