Understanding Electric Current Quiz - CBSE Class 6 Science

Free practice quiz: Understanding Electric Current (CBSE Class 6 Science). 18 multiple-choice questions with answers and explanations. Play online, no sign-up needed.

This CBSE Class 6 Science practice quiz has 18 multiple-choice questions on Understanding Electric Current, and 18 of them come with an explanation. Try the 5 sample questions below (tap an option to check yourself), then play the full quiz online. No sign-up needed.

Sample questions

1. What is electric current?

   1. Flow of electrons
   2. Flow of protons
   3. Flow of neutrons
   4. Static charge
   Show answer

   Answer: A. Flow of electrons

   Electric current is the flow of electric charge, typically carried by electrons in a conductor.

2. Which of the following materials is a good conductor of electricity?

   1. Rubber
   2. Plastic
   3. Copper
   4. Wood
   Show answer

   Answer: C. Copper

   Copper is a good conductor of electricity because it has free-moving electrons that facilitate electric current flow.

3. If a 12V battery is connected to a circuit with a resistance of 4 ohms, what is the current flowing through the circuit?

   1. 3 Amperes
   2. 1 Ampere
   3. 4 Amperes
   4. 2 Amperes
   Show answer

   Answer: A. 3 Amperes

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

4. A circuit has a total resistance of 10 ohms and a current of 2 Amperes. What is the voltage across the circuit?

   1. 5 Volts
   2. 10 Volts
   3. 15 Volts
   4. 20 Volts
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   Answer: D. 20 Volts

   Using Ohm's law (V = I * R), we find V = 2A * 10Ω = 20 Volts.

5. A 24V battery is connected to a circuit with an unknown resistance, which draws a current of 4 Amperes. What is the resistance?

   1. 3 Ohms
   2. 6 Ohms
   3. 12 Ohms
   4. 24 Ohms
   Show answer

   Answer: B. 6 Ohms

   Using Ohm's law (R = V/I), the resistance R = 24V / 4A = 6 Ohms.

More questions in this quiz

Answers and explanations are in the full quiz.

1. What unit is used to measure electric current?
2. What happens to the current if the resistance is increased in a circuit, while the voltage is constant?
3. An electric bulb is an example of which type of device?
4. What is the primary function of a fuse in an electric circuit?
5. What does a circuit need to function properly?
6. Which device is used to measure electric current?
7. What is the equivalent resistance of two resistors of 6 ohms each in parallel?
8. If the resistance in a circuit is halved, what will happen to the current if voltage remains constant?
9. What is the purpose of a switch in an electric circuit?
10. A circuit has a resistance of 5 ohms and a voltage of 15 volts. What is the current in the circuit?
11. How much power is consumed by an appliance that operates at 120V and draws 2A of current?
12. An electric circuit has a current of 5 Amperes and resistance of 10 Ohms. What is the voltage in the circuit?
13. If a 10-ohm resistor and a 5-ohm resistor are in series, what is the total resistance?

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