If two points are at different potentials , then the current will flow till the time both the points reach the same potential( without a battery).
Now the question is that - If we connect the switch in the neutral wire, when the switch is off, the appliance is connected to the higher potential through the live wire ( which was not disconnected), the current flows through the live wire to the appliance . If we now touch the appliance, we will get shock because the appliance was at higher potential and our body was at a lower potential, thus current moved Through our body. But even if we wear rubber shoes ( or some insulation between our body and earth is there) , we should get shock because the only change that happens now is that the current doesn't reach ground. But it will flow TO our body (lower potential ) from the live wire (higher potential) even if there is not a return path for current ( not a complete circuit). Why is this not true ?
Now the question is that - If we connect the switch in the neutral wire, when the switch is off, the appliance is connected to the higher potential through the live wire ( which was not disconnected), the current flows through the live wire to the appliance . If we now touch the appliance, we will get shock because the appliance was at higher potential and our body was at a lower potential, thus current moved Through our body. But even if we wear rubber shoes ( or some insulation between our body and earth is there) , we should get shock because the only change that happens now is that the current doesn't reach ground. But it will flow TO our body (lower potential ) from the live wire (higher potential) even if there is not a return path for current ( not a complete circuit). Why is this not true ?
Please read the full solution.
If you have an excess of electron in your body, your hair might stand on end and you might feel a bit negative (I couldn't help that pun), and you should probably avoid touching people or metal object if you don't want a static shock, but other than that, it's mostly harmless. The real danger comes from flowing electrons. Because the body basically runs on electric impulses with very small currents and voltages, even a tiny amount of current flowing through us could do drastic harm. When you get a lot of electrons flowing through you, they could cause all sorts of mayhem. From burning you to stopping your heart.
Normally, in bare feet for instance, when you touch some highly charged object, your body provides a conduit for that charge to flow through you and into the ground, the place that charges tend to want to go. This is bad because it's flowing electrons. But when you wear insulating footwear, you block the charge's ability to go to the ground. Instead, all that happens is the charge between you and the object balances. You gain or lose some electrons. Sure, there's electrons flowing through your finger or your hand, but nothing important like your heart or major nerves. Worst case is you get a slight burn where you got the static shock. Then the charge stays in you until it finds a way to jump to something less charged. Keep a small metal thing in your pocket and use it to touch anything metal when this happens. That prevents you from getting a shock. But ultimately, the electrons aren't flowing through your body. They just sit there. No flowing electrons, no major problem.
Please read the full solution.
If you have an excess of electron in your body, your hair might stand on end and you might feel a bit negative (I couldn't help that pun), and you should probably avoid touching people or metal object if you don't want a static shock, but other than that, it's mostly harmless. The real danger comes from flowing electrons. Because the body basically runs on electric impulses with very small currents and voltages, even a tiny amount of current flowing through us could do drastic harm. When you get a lot of electrons flowing through you, they could cause all sorts of mayhem. From burning you to stopping your heart.
Normally, in bare feet for instance, when you touch some highly charged object, your body provides a conduit for that charge to flow through you and into the ground, the place that charges tend to want to go. This is bad because it's flowing electrons. But when you wear insulating footwear, you block the charge's ability to go to the ground. Instead, all that happens is the charge between you and the object balances. You gain or lose some electrons. Sure, there's electrons flowing through your finger or your hand, but nothing important like your heart or major nerves. Worst case is you get a slight burn where you got the static shock. Then the charge stays in you until it finds a way to jump to something less charged. Keep a small metal thing in your pocket and use it to touch anything metal when this happens. That prevents you from getting a shock. But ultimately, the electrons aren't flowing through your body. They just sit there. No flowing electrons, no major problem.
