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  1. V

    Potential at a point in a circuit

    Why is the potential at X , denoted by V, not V/8 = 4.8/(4.8+7.6) ? Why is numerator of resistance part 7.6 and not 4.8 by potential divider principle?
  2. V

    Circuits confusing

    ThIS IS NOT A HOMEWORK! I need to know the difference which is why i used simple setups to help ask a question. This helps me in doing more complicated circuits after understanding where a potential drop occurs and when it doesnt
  3. V

    Current of electricity- power of a resistor in parallel

    I got the answer by comparing I2R of the circuit with resistor R but why do i have to use R/2 for power of resistor R?( P= (0.5I)^2 (R/2)) I know its parallel to Resistor Q but i want to find the power of that component so shouldnt it be P= (0.5I)^2 (R) instead?
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    Waves-displacement vs movement

    How can a particle move downwards and be displaced upwards? Sounds paradoxical. I understand the part about movement but not displacement. What's the difference? Isnt displacement like the amplitude so when a particle in a transverse wave move down doesnt it mean its displaced downward?
  5. V

    Circuit - Why a more accurate value of the resistance?

    Circuit -- Why a more accurate value of the resistance? Note: CURRENT CAN FLOW THROUGH THE VOLTMETER IN THESE CASES. Why does the second setup as shown by the arrow in the picture give a more accurate value of the resistance of that wire? It says the current in setup 1 on the left measured...
  6. V

    Current electricity

    Refer to my third post :) clearer and the picture in my second post
  7. V

    Forces-vector diagram triangles

    when a cable car is stationary,it is in equilibrium.So the forces acting on it forms a closed triangle.(the vector diagram) Why is the triangle an isosceles triangle? I did this question on my paper and stumbled across this on the answers,couldnt figure out why hope someone could enlighten me!
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