The force experienced by a current-carrying conductor move in a magnetic field is employed in the working of the _________? Which of the statements below are correct?
i. moving coil ammeter ii. electric bell iii. electric motor. A. i and ii only B. ii and iii only C. i and iii only D. i, ii and iii Correct Answer: Option C C. i and iii onlyWhich of the following statements about a bar magnet is correct?
A. iron fillings cling uniformly along the length of a bar magnet B. the magnetic properties are more pronounced at the middle of a magnet C. it is impossible to have the same poles at the end of a magnet D. the magnetic properties are more pronounced at points near...An electric lamp rated 120W is used on a 240Vrms, calculate the resistance of its filament?
A. 480Ω B. 360Ω C. 60Ω D. 2Ω Correct Answer: Option A A. 480ΩA cell of e.m.f. 1.5V and internal resistance 1.0Ω is connected to two resistors of resistance 2.0Ω and 3.0Ω in series. Calculate the current through the resistors?
A. 0.25A B. 0.30A C. 0.35A D. 0.50A Correct Answer: Option A A. 0.25A Explanation I = E/(R+r)=1.5/(5+1) = 1.56=0.25AProducts
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