How do electric field lines indicate the strength of the field? a) by how long the lines are b) by how close the lines are c) by the direction the lines are pointing d) by showing the charge that creates the line

Answer

B) By how close the lines are.

Explanation

Electric fields lines are used to convey information about the electric field. Electric field lines are drawn such that they point in the direction a positive test charge would go when placed in any particular point space. In this sense, electric field lines give information about the direction of the electric field in the space around a charge.

The other piece of information that electric field lines convey is strength of the field in the space around the charge. The closer the lines are to each other, the stronger the field the closer the lines are to each other. An illustration of this point is that near the charge where the lines originate, it is known that the electric field is stronger. When drawn electric field lines are closer to each other near charges than they are far away from charges.

B) By how close the lines are.

  the grams     of oxygen gas   that can be produced     is 20.6   grams of o₂

calculation

2liclo₃ →   2 licl + 3 o₂

step 1:   find the moles of liclo₃

moles = mass÷ molar mass

from periodic table the molar mass of liclo₃ =6.9 +35.5   +(16 x3) =90.4 g/mol

moles=38.7 g÷90.4 g/mol=0.4281   moles

step 2:   use the   mole ratio   to calculate the moles of o2

from equation above, liclo₃: o₂   is 2: 3  

therefore the moles of   o₂=0.4281 moles x3/2 =0.6422   moles

step 3: find mass   of o₂

mass= moles x molar mass

from periodic table the   molar mass of   o₂ = 16 x2= 32 g/mol

mass=0.6422   moles   x   32 g/mol = 20.6 grams of o₂

battery with hi vtge high val resist in series