Class 10 Science questions for CBSE

If a wire's length is increased and its cross-sectional area is decreased, how will its resistance be affected?

A conductor with a resistance of 5 ohms is connected to a 10V battery. What current flows through the conductor according to Ohm's law?

When a circuit with a potential difference of 18 V is connected to a 3 Ω resistor, what is the current flowing through the resistor?

In a circuit where the resistance is 15 ohms and the current is 5 A, what is the potential difference across the circuit?

A wire made of a material with a high resistivity is used in a circuit. How will this affect the overall resistance of the circuit compared to using a wire with low resistivity?

A conductor has a resistance of 20 ohms. If the voltage across it is 40 volts, what is the current flowing through the conductor?

In a circuit, if the potential difference is halved while keeping the resistance constant, what will happen to the current?

A circuit is constructed with a 24 V battery and a resistor. If the current flowing through the circuit is 8 A, what is the resistance of the resistor?

If a wire's diameter is increased, what will happen to its resistance, assuming the length remains constant?

A material has a resistivity of 3 x 10^-6 Ωm. If a wire made of this material is 50 m long and has a cross-sectional area of 2 x 10^-5 m², what is its resistance?

During an experiment, a student measures a potential difference of 50 V across a resistor and finds a current of 10 A flowing. What is the resistance of the resistor?

A circuit contains a battery of 15 V and a resistor of 5 Ω. What is the current in the circuit?

If a conductor's length is doubled while keeping its cross-sectional area and material constant, how does its resistance change?

A wire has a resistance of 10 ohms. If the voltage across it is increased to 20 volts, what will be the new current flowing through the wire?

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

A circuit is designed with a 9 V battery and a current of 3 A. What is the resistance in the circuit?

A copper wire has a length of 100 m and a cross-sectional area of 1 mm². If the resistivity of copper is 1.68 x 10^-8 Ωm, what is the resistance of the wire?

A resistor of 8 ohms is connected in a circuit with a voltage of 16 volts. What is the current flowing through the resistor?

In a laboratory experiment, a student finds that the potential difference across a conductor is 10 volts and the current flowing through it is 2 amperes. What is the power consumed by the conductor?

A student measures the electric current in a circuit and finds it to be 3 amperes. What is the charge that passes through a cross-section of the conductor in 4 seconds?