💬 Discord
Login

Electric Current and its Effects Practice Questions

Class 7 · Science · 939 free MCQs with instant results and detailed explanations.

939
Total
369
Easy
400
Medium
170
Hard

Start Practicing Electric Current and its Effects

Take a timed quiz or customize your practice session

Quick Quiz (10 Qs) → Mock Test (25 Qs) ⚙ Customize

Topics in Electric Current and its Effects

Electromagnet 204
Symbols of Components 256
Heating Effect 302
Magnetic Effect 177

Sample Questions from Electric Current and its Effects

Here are 10 sample questions. Start a quiz to get randomized questions with scoring.

Q1
Easy
In a circuit diagram, what does a light bulb symbol indicate?
A. Current direction
B. Source of power
C. Resistance
D. Light source
Show Answer & Explanation
Correct Answer: D
The symbol for a light bulb indicates a light source in the circuit, where electrical energy is converted to light energy.
Q2
Easy
Which symbol represents a voltmeter in a circuit diagram?
A. A circle with an 'A'
B. A circle with a 'V'
C. A rectangle
D. A zigzag line
Show Answer & Explanation
Correct Answer: B
A voltmeter is represented by a circle with a 'V' inside it, indicating its function to measure voltage.
Q3
Easy
What symbol indicates a connecting wire in a circuit diagram?
A. A zigzag
B. A straight line
C. A dashed line
D. A circle
Show Answer & Explanation
Correct Answer: B
A straight line represents a connecting wire in circuit diagrams, showing how components are linked.
Q4
Medium
What does the symbol 'R' represent in a circuit diagram?
A. Resistor
B. Relay
C. Rectifier
D. Resistor Network
Show Answer & Explanation
Correct Answer: A
'R' stands for Resistor, which limits the flow of electric current.
Q5
Medium
In a circuit diagram, which symbol represents a battery?
A. Circle with a '+' and '-' sign
B. Rectangle
C. Triangle
D. Dashed Line
Show Answer & Explanation
Correct Answer: A
The battery symbol consists of a long line (positive) and a short line (negative) indicating polarity.
Q6
Medium
What is the purpose of the symbol for a switch in a circuit diagram?
A. To indicate current flow
B. To show connection points
C. To control current flow
D. To represent energy storage
Show Answer & Explanation
Correct Answer: C
A switch is used to control the flow of current by opening or closing the circuit.
Q7
Medium
In a circuit diagram, what does the symbol 'C' typically represent?
A. Capacitor
B. Current Meter
C. Coil
D. Connector
Show Answer & Explanation
Correct Answer: A
'C' is used to denote a Capacitor, which stores electrical energy.
Q8
Hard
Which symbol represents a battery in an electric circuit diagram?
A. A long line and a short line parallel to each other
B. A circle with a cross inside
C. A rectangle with an 'X' inside
D. A zigzag line
Show Answer & Explanation
Correct Answer: A
The symbol for a battery consists of a long line (positive terminal) and a short line (negative terminal) arranged parallel to each other.
Q9
Hard
In a circuit diagram, which of the following symbols indicates a switch that is open?
A. A line with a break in it
B. A complete circle
C. A line with a dot above it
D. Two parallel lines connected by a diagonal line
Show Answer & Explanation
Correct Answer: A
An open switch is represented by a line that has a break in it, indicating that the circuit is incomplete.
Q10
Hard
Which of the following symbols is used to represent a resistor in an electric circuit?
A. A zigzag line
B. A straight line
C. A rectangle
D. A dashed line
Show Answer & Explanation
Correct Answer: A
A resistor is represented by a zigzag line in circuit diagrams, indicating its function to resist current flow.

Showing 10 of 939 questions. Start a quiz to practice all questions with scoring and timer.

Practice All 939 Questions →

More Science Chapters

1 Nutrition in Plants
1223 Qs →
2 Nutrition in Animals
1149 Qs →
3 Fibre to Fabric
1148 Qs →
4 Heat
1144 Qs →
5 Acids Bases and Indicators
1108 Qs →
6 Physical and Chemical Changes
1170 Qs →
7 Weather Climate and Adaptations
1208 Qs →
8 Winds Storms and Cyclones
1174 Qs →

Other Class 7 Subjects

📐 Mathematics → 🌍 Social Science →

Electric Current and its Effects — Class 7 Science Practice Questions Online

This page contains 939 practice MCQs for the chapter Electric Current and its Effects in Class 7 Science. The questions are organized by difficulty — 369 easy, 400 medium, 170 hard — so you can choose the right level for your preparation.

Every question includes a detailed explanation to help you understand the concept, not just memorize answers. Take a timed quiz to simulate exam conditions, or practice at your own pace with no time limit. This chapter covers 4 topics, giving you comprehensive coverage of the entire chapter.