Class 10 Science questions for CBSE

When sodium sulfate reacts with barium chloride, which product is formed?

In the human female reproductive system, which organ is responsible for the development of the fetus?

In flowering plants, which of the following develops into a fruit after fertilization?

Which part of the central nervous system is responsible for processing visual information?

During a science experiment, a student touches a hot surface and quickly withdraws their hand. What system is primarily responsible for this reflex action?

A wire has a resistance of 4 ohms and a current of 3 A is flowing through it. What is the potential difference across the wire?

In a circuit, if the electric potential difference across a component is measured to be 12 V, what does this indicate?

A circuit has a current of 5 A. If the time is 10 seconds, what is the total charge that has passed through a point in the circuit?

In a practical application, a technician is troubleshooting an electrical device that operates at a potential difference of 24V. However, the device is not functioning correctly. Describe the steps the technician would take to measure the potential difference across the device and analyze the reasons for any discrepancies observed compared to the expected voltage. Include any relevant calculations or principles that should be considered.

A laboratory experiment is set up to study the relationship between electric current, voltage, and resistance using a variable resistor and a 9V battery. Explain how you would measure the electric current flowing through the circuit and determine the resistance of the variable resistor. Include details about the instruments used and the procedure followed in your explanation.

In a circuit with a potential difference of 24V across a 6Ω resistor, what is the current flowing through the resistor?

If an electric circuit has a current of 2 A and operates for 30 seconds, calculate the total charge transferred during this time.

Discuss how the cross-sectional area of a wire affects its resistance. Provide a comparison between a thin wire and a thick wire of the same material.

A resistor with a resistance of 8Ω is connected to a power supply of 16V. What is the power consumed by the resistor?

A battery provides a potential difference of 12V across a circuit. If the total resistance in the circuit is 4Ω, what is the current flowing through the circuit?

If a conductor carries a current of 5 A, how many coulombs of charge pass through it in 4 seconds?

Explain how increasing the length of a conductor affects its resistance. Provide an example with a comparison of two wires of different lengths.

A wire has a resistance of 15 ohms. If it is connected to a 30V battery, calculate the current flowing through the wire using Ohm's Law.

In a circuit with a 9V battery, the potential difference across a resistor is measured as 6V. What is the voltage drop across the remaining components in the circuit?

A circuit has a current of 3 A flowing through it. What is the total charge that passes through a conductor in 10 seconds? Use the formula Q = I × t.