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.

Sample questions

1. What is electric current?

   1. Flow of electrons
   2. Flow of protons
   3. Flow of neutrons
   4. Static charge
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   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
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   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
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   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
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   Answer: B. 6 Ohms

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

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