11. As the frequency increases the reactance of a capacitor and inductor will 12
ID: 306547 • Letter: 1
Question
11. As the frequency increases the reactance of a capacitor and inductor will 12. The average over one cycle of power is, zero, (IV)/2, PR/2, VI, VrmsIrms 13. Output voltage of a transformer is larger than input is call step up or step down 14. A motor draws maximum current when it is, running in full speed or the moment it starts. 15. A charge particle is moving parallel to magnetic field, the force is zero, maximum, minimum 16. The induce emfEe-???/dt, Here the minus sign because according to Faraday's law or Lenz's law 17. The origin of magnetic field is from circulating electron in atom 18. Which one vector, work, energy, magnetic field, electric potential 19. Two parallel wires carries same current in the same direction, the direction of the force 20. Which of the following has no mono-poleExplanation / Answer
Solution:
11) reactane of capacitor will decrease and reactance of inductor will increase as
capacitive reactance = 1 / (wC) and inductive reactance = wL
12) The average power over one cycle depends on the circuit(which is not mentioned)
for inductive ciruit Pavg = 0
for capacitive circuit Pavg = 0
for RLC circuit Pavg = Vrms * Irms
13) It is called step up transformer
14) motor draws maximum current when it starts.
15) Using F = q ( v x B) when v and B are in same direction
F will be zero
16) True ( Accroding to theses law's induced emf opposes the cause of induction)
17) Yes it is ture
18) Magentic field is vector quantitiy
19) The direction of force will be towards each other that means the two wires will attract each other.
20) Incomplete question.
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