Electric Field's 3.0 / 5 based on 1 rating ? PhysicsElectric fieldsA2/A-levelOCR Created by: IssyCreated on: 01-10-17 11:00 Which is a possible unit for electric field strength? V/m 1 of 17 What isn't an equation for electrical field strength? E=kQ/r 2 of 17 Define electric field strength at a point in space Force per unit positive charge 3 of 17 What do the spacing of field lines indicate? The electric field strength 4 of 17 What is an equipotential surface? A continuous surface joining points of the same potential in a three dimensional electric field 5 of 17 What is not a correct method for constructing field lines? With varying spaces between them 6 of 17 When can E=V/d be applied In uniform electric fields where the filed lines are straight [E=-dv/dr 7 of 17 What effect does increasing the distance between the two plates have on the electric field strength The electric field strength decreases 8 of 17 What statement is incorrect about millikan's oil drop experiment is incorrect? They measured the radius of the oil drop before the experiment to calculate the volume and thus the mass [mass=density x volume 9 of 17 What statement about a LINAC is incorrect? All statements are correct 10 of 17 What one of the below isn't a use for deflected beams? AFM- Hitting targets in an Atomic Force Microscope 11 of 17 How can a beam be deflected? Both 12 of 17 What does the middle finger represent in Fleming's Left Hand Rule? The direction of current -this is the same as the direction of motion of a charged particle 13 of 17 What does the thumb represent in Fleming's Left Hand Rule? The direction of force 14 of 17 Why do the paths of some charged particles spiral inwards? The velocity of the particle decreases from collisions with other particles as r=mv/Bq as v decreases so does r 15 of 17 What is Bremsstrahlung? A characteristic of all accelerating and decelerating particles is that they radiate energy. [Change in direction is also acceleration] 16 of 17 What statement about a cyclotron in incorrect? The current supplied is direct 17 of 17
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