The Answer Is:
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When the balloon is kept in the sun, due to Sun's heat, the kinetic energy of gaseous particles inside the balloons also gets increased and the balloon expands. This will increase the pressure on the walls of the balloon. It continues to expand and comes to a stage when the baloon bursts.
Answer:
Explanation:
Lets take
Resistance of bulb 1 =R₁
Resistance of bulb 2 =R₂
As we know that power P
P= ΔV²/R
Given that voltage difference is same for both bulbs
So
P₁R₁= ΔV² --------1
P₂R₂= ΔV² -----------2
When these resistance are connected in series then equivalent resistance R
R=R₁+ R₂
The new power P'
P'=ΔV²/R
P'R=ΔV² ------3
From equation 1 ,2 and 3
P'(R₁+ R₂) = ΔV²
Answer: C) the energy gained by an electron in moving through a potential difference of 1 volt
Explanation: In order to explain this response we have to consider that the potential energy for any charge is given by:
Up=q*ΔV then if we consider an electron accelerate by a difference potential of 1V, we have:
Up=e*V ( energy UNITS, which is equal to 1.6*10^-19 J).
The option A) and B) are wrong because elentron Volt has units of energy not force.
The option D) is also wrong because the the work done to move un electron one meter also depends of the magnitud of the potential difference ( electric field) where the electron is moving .
Finally the option D) is false because the one C*V is one J, is huge quantity of energy compared to the electron Volt (eV).
Its an example of newton's 2nd law