Two parallel conductors carry equal currents in the same direction. Which of the following statement is not a correct observation?
A. Each of the conductors will experience a force B. Each of the conductors can move C. The forces on the conductors will be equal D. There are concentric lines of force around each conductor E. The two conductors will repel each other Correct Answer: Option E –...
A battery of emf 24V and internal resistance 4Ω is connected to a resistor of 32Ω. What is the terminal p.d of the battery?
A. 24.0V B. 21.3V C. 16.0V D. 2.7V E. 2.0V Correct Answer: Option B = 21.3V Explanation E = V + Ir V = E- Ir V = 24 – {(24/36) x 4} V = 21.3V
A cell can supply current of 0.8A and 0.4A through a 2Ω and a 3Ω resistors respectively. Calculate the internal resistance of the cell.
A. 0.2Ω B. 0.4Ω C. -1.0Ω D. 3.0Ω E. 9.0Ω Correct Answer: Option C = -1.0Ω
Local action is normally prevented from taking place in a simple electric cell by?
A. introducing an oxidizing agent into the acid B. not drawing current continuously for long periods C. amalgamating the surface of the zinc plate D. using a porous pot to isolate the zinc plate from the acid E. using dilute sulphuric acid Correct Answer: Option C...
A transformer with 55500 turns in its primary is used between a 240V a. c supply and a 120V kettle. Calculate the number of turns in the secondary
A. 11000 B. 2750 C. 460 D. 232 E. 10 Correct Answer: Option B = 2750 Explanation Ep/Es = np/ns 240/120 = 5500/ns => ns = 2750Products
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