Electricity And Magnetism - Study Mode
[#66] Which one of the following devices changes low voltage alternating current to high voltage alternating current and vice-versa?
Correct Answer
(C) Transformer
[#67] The easiest method of maintaining the electric potential difference between the two ends of a conductor is to connect it between the terminals of . . . . . . . . to get a continuous flow of current.
Correct Answer
(D) battery
[#68] Which of the following solutions is not a conductor of electricity?
Correct Answer
(B) Glucose solution
[#69] If the resistance of the coil is 750 ohms, how much current will flow from the 220V source to the electric heater coil?
Correct Answer
(A) 0.29 A
[#70] The SI unit of . . . . . . . . is ohm?
Correct Answer
(D) resistance