ELECTRIC POTENTIAL & POTENTIAL DIFF ELECTRICITY 12 Class 10th Physics (Practice Sheet) 1 What is electric potential at a point in an electric field? A. The electric field strength at that point B. The amount of charge at that point C. The work done in bringing a unit positive charge from infinity to that point D. The resistance at that point 2 The SI unit of electric potential is: A. Volt B. Joule C. Watt D. Ohm 3 Which of the following statements is true regarding potential difference? A. It depends on the amount of charge B. It is a vector quantity C. It is the same across all elements in a series circuit D. It is the ratio of current and resistance 4 If a charge of 5C is moved through a potential difference of 10V, how much work is done? A. 15J B. 2J C. 50J D. 0.5J 5 A resistor has a potential difference of 12V across its ends. If the current flowing through it is 2A, what is its resistance? A. 6 ohms B. 24 ohms C. 14 ohms D. 10 ohms 6 A charge of 10mC is moved from infinity to point A in the Electric field. The work done in this process is 20 Joules. What is the Potential difference? 7 A Charge of 50mC is moved from one point to another (from A to B). The voltage at A is 50kV, and the Voltage at B is 30kV, Find the Work done by the charge. 8 What are the SI units of these following quantities: Energy, Potential Difference, Charge, Resistance 9 Find the current through the circuit when the voltage across the terminal is 30V and the resistance offered by the conductor is 10ohm. 10 What is electric potential? Page 1 Email: Phone No: Website:
[email protected] +91 93299 65211 www.brisklearning.com Address: Office No. 605, CTS No. 658, Gayatri Bhuvan, A & B, Kandivali, Dattani Park, Thakur Village, Kandivali East, Mumbai, Maharashtra 400101
Tiếng Việt