Acircuit contains a battery, a switch, an inductor, and a resistor connected in series. initially, the switch is open.

at which of the following times does the energy stored in the inductor have the largest value?

a) before the switch is closed

b) immediately after the switch is closed

c) a long time after the switch is closed

d) none of the above

a long time after the switch is closed

Explanation:

Energy stored in an inductor is given by

E = 1/2 L i²

A). Before the switch is closed the current in the circuit is zero so energy in inductor will be zero.

B). Inductor opposes the flow of current. It takes some time for current to reach its maximum value. So immedialtly after closing the switch the current  and energy in inductor will still be zero.

C). After closing the switch it takes some time for current to reach its maximum value as inductor opposes the flow of current. so after a long time the current in inductor will reach its maximum value and hence the energy stored will be maximum.

  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

it breaks and dirupture other materials and other sencews from the bottom