Question 540: Electrostatics & Capacitance

Question

Two points $$P$$ and $$Q$$ are maintained at the potentials of $$10$$ $$V$$ and $$-4$$ $$V$$, respectively. The work done in moving $$100$$ electrons from $$P$$ to $$Q$$ is :

Accepted Answer

$$  {{{W_{PQ}}} \over q} = \left( {{V_Q} - {V_P}} ight)$$
$$ \Rightarrow {W_{PQ}} = q\left( {{V_Q} - {V_P}} ight)$$
$$ = \left( { - 100 	imes 1.6 	imes {{10}^{ - 19}}} ight)\left( { - 4 - 10} ight)$$
$$ =  + 2.24 	imes {10^{ - 16}}J$$

Answer

$$9.60 	imes {10^{ - 17}}J$$

Answer

$$ - 2.24 	imes {10^{ - 16}}J$$

Answer

$$ 2.24 	imes {10^{ - 16}}J$$

Answer

$$- 9.60 	imes {10^{ - 17}}J$$

Electrostatics & Capacitance

Two points $P and Q are maintained at the potentials of 10 V and -4 V, respectively. The work done in moving 100 electrons from P to Q$ is :

Choose the correct answer: