Class 10 Quiz Level 3 (Difficult) – Electricity

Total questions: 10

A charge of 2C is placed in a uniform electric field of 5N/C at a distance of 3m from the reference point. What is the electric potential energy?

Topic: Electric Potential Energy in a Uniform Electric Field

Deselect Answer

30J

15J

10J

None

A resistor of 8Ω has a current of 2A flowing through it for 5 minutes. How much heat is produced?

Topic: Joule Heating Effect

Deselect Answer

960J

1920J

4800J

1600J

None

In a Wheatstone bridge, if all four resistors are equal at 10Ω and the bridge is balanced with a supply voltage of 20V, what is the current through the galvanometer?

Topic: Wheatstone Bridge

Deselect Answer

2 A

1 A

0 A

0.5 A

None

In a circuit with two voltage sources, 10V and 5V, and resistors of 2Ω each, what is the current through a resistor when only the 10V source is considered?

Topic: Superposition Theorem

Deselect Answer

2.5A

0.5A

None

An AC circuit has a power factor of 0.8 and the apparent power is 500VA. What is the real power?

Topic: Power in AC Circuits

Deselect Answer

500W

400W

300W

600W

None

Three resistors of 10Ω each are connected in series to a 30V battery. What is the power dissipated by each resistor?

Topic: Power Dissipation in Resistors

Deselect Answer

10W

20W

30W

40W

None

In a circuit with two loops, one loop has a 10V battery and a 5Ω resistor, and the other loop has a 5V battery and a 10Ω resistor. If the current in the first loop is 1A, what is the current in the second loop?

Topic: Kirchhoff's Voltage Law

Deselect Answer

0.5A

1.5A

None

A transformer has a primary coil with 100 turns and a secondary coil with 50 turns. If the primary voltage is 240V, what is the secondary voltage?

Topic: Transformer Voltage Ratio

Deselect Answer

120V

240V

480V

60V