Class 10 Quiz Level 3 (Difficult) – Electricity Leave a Comment / By anushka kumari / August 13, 2024 Class 10 Quiz Level 3 (Difficult) – Electricity Total questions: 10 1. 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 FieldDeselect Answer 30J 15J 10J 5J None 2. A resistor of 8Ω has a current of 2A flowing through it for 5 minutes. How much heat is produced? Topic: Joule Heating EffectDeselect Answer 960J 1920J 4800J 1600J None 3. 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 BridgeDeselect Answer 2 A 1 A 0 A 0.5 A None 4. 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 TheoremDeselect Answer 2.5A 5A 1A 0.5A None 5. 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 CircuitsDeselect Answer 500W 400W 300W 600W None 6. 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 ResistorsDeselect Answer 10W 20W 30W 40W None 7. 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 LawDeselect Answer 0.5A 1A 1.5A 2A None 8. 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 RatioDeselect Answer 120V 240V 480V 60V None 9. Two resistors, 20Ω and 30Ω, are connected in parallel. What is the equivalent resistance? Topic: Series and Parallel ResistorsDeselect Answer 12Ω 15Ω 18Ω 50Ω None 10. An RC circuit with R = 1kΩ and C = 10μF is connected to a 12V supply. What is the voltage across the capacitor after one time constant? Topic: RC Circuit ChargingDeselect Answer 4V 7.6V 8V 12V None 1 out of 10 Time's up
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