It may not ring. The buzzer gear is actually an on-off gear, that is, the gear that can know the on-off state of the line only by listening to the sound without looking at the instructions of the electric meter.

There are generally two testing methods for this gear, and different multimeter manufacturers may use different methods.

Method 1: Buzz with resistor. When the resistance is smaller than a certain value (for example, 30 ohms), it is considered that the path buzzer rings, and when it is larger than this resistance, it is considered that the open buzzer does not ring.

Method 2: Turn on the voltage buzzer with diode. When the measured conduction voltage is less than a certain value (such as 0.3v), it is considered that the channel buzzer rings, and when it is greater than this voltage, it is considered that the open buzzer does not ring.

After the resistor is powered on, it will affect the resistance value or on-voltage value of the resistor, which may make this value larger or smaller, which is related to the positive and negative direction of power-on, so the buzzer may not ring.

But it's best not to measure the resistance by electricity, otherwise it may burn out the multimeter.