There must have been a build up of static electricity, either in yourself or in the trolley. The shock is the spark as it makes its way to earth.
RCD cut the current to the circuit while preventing the electric shock
no actually dc current is more dangerous than ac because dc is a direct current and has no current zero condition ,which is very dangerous and do not leave us if we get shock while ac current leave us when we get shock
it is a flow of charge practically from negative to positive terminal
to cut of the item or equipment inside emergency trolley, eg: micropore.
An electromagnet if formed by pushing current through a coil. If the circuit is truly open, current will cease to flow, thus no electromagnet.
The shock is due to static electricity jumping across as it heads to earth.
When pushing a trolley, the main forces acting on it are the force of friction between the wheels and the ground, the force of gravity acting downward, and the normal force exerted upward by the ground on the trolley to support its weight. Additionally, if the trolley is on an incline, there will be a component of the gravitational force acting parallel to the incline.
You can move a trolley with a magnetic force (e.g. use magnets to draw the trolley away from it's original position - assuming it is made of a magnetic material), a gravitional force (e.g. rolling the trolley down a ramp) or with an applied force (e.g. pushing the trolley).
Charles Van De Poele invented the idea of trolley poles pushing upward against the trolley wire with the first electric transit.
The push behind a current is voltage.
They were named the Dodgers because in Brooklyn they had trains running through the city and people would always have to "Dodge" them That is how they got their name! The early trolleys in Brooklyn were run on DC power. This caused the trolleys to build up excessive electrical current and when the amount became too great the trolley would make a popping noise. This was an advanced warning of an oncoming electrical shock to customers. When this popping was heard the passangers would get off the trolley ASAP to avoid the shock. This activity was known as Trolley Dodging.
So no other person but the victim gets the shock.
Yes. It determines the direction in which change will happen. If I am pushing a trolley along the supermarket aisle, and you push with me, the trolley will go faster. If you push against me it will slow down, and if you push sideways it will change direction.
direct current
Superstores are giant supermarkets. They generally are not centres of activities other than shopping, retail therapy or simply pushing a trolley around.
It is impossible to separate the two. The voltage determines the magnitude of the current, and the current causes the damage. So, they are both responsible for electric shock.
A Current Affair - 1971 Shock Exit is rated/received certificates of: Australia:PG