What is the problem of short circuit to ground when opening the throttle?

1. is open, the switch is not closed, and no current passes through the circuit. Unlike an open circuit, when the switch is closed, no current flows through the circuit due to the fault of the conductor or the switch.

2. Short circuit, the current directly returns to the negative pole of the power supply, and the igniter is not used. At this time, the current is huge, and it is easy to emit high heat, which may cause danger. The open circuit voltage is the power supply voltage on both sides, and the short circuit voltage is zero on both sides. Short circuit means that there is no connection in the middle of the guide wire and it is directly connected to the positive and negative electrodes. An open circuit is equivalent to a short circuit of a switch. The cut-off short-circuit current flows directly from one end of the power supply back to the other end of the power supply without flowing through the load.