When measuring the current, the ammeter should be connected in parallel with the circuit under test Is that right

When measuring the current, the ammeter should be connected in parallel with the circuit under test Is that right

No, the ammeter should be connected in series with the circuit under test

In parallel circuit, which current meter measures?
Is it the nearest one to the ammeter

Measure the consumer connected in series with the ammeter. It's not the nearest one

Physics: after exploring "what is the relationship between the main current and the branch current in the parallel circuit", a student imagined whether he could only need an ammeter and connect it
After exploring "what is the relationship between the main current and the branch current in the parallel circuit", a student imagined whether the experiment could be completed with only one ammeter and only one primary line? (it is known that the current through the bulb is about 0.2A). Can you confirm his assumption?
(1) Equipment and quantity needed-------------------------
(2) The experimental steps were as follows-----------------------------------------------
(3) Please evaluate this improvement:------------------------------

(1) Also need equipment and quantity: prepare 2, 3 switches; 2, 3 bulbs; 1A ammeter 1; wire
(2) Experiment steps: 1. Connect a parallel circuit, install ammeter in main circuit, install switch and bulb in each branch circuit
2. Connect the power supply, connect each branch in turn, one branch at a time, and record the reading of the ammeter
We can get: one bulb -- current 0.2A; two bulbs -- current 0.4A; three bulbs -- current 0.6A
3. Thus, the main current in the parallel circuit is the sum of the branch currents

Explore "the relationship between the main circuit current and each branch current of the parallel circuit". 1. What current values need to be measured. 2. What should we do if there is only one ammeter?
3. After connecting, close the switch and the bulb is not on. Why is there no indication of ammeter? (2 items) how to solve it?
Brothers, sisters, uncles and aunts. I'm just a junior high school student - I've been told so much. Besides, I want the method. Rather, what if it's a short circuit? -- I'm a sophomore in junior high school. I don't know. And why can't it be short circuited? The power is short circuited. It's just broken. The light is not bright. The ammeter has no indication. It's equivalent to connecting the positive and negative poles of the power supply. Then the light bulb doesn't work. The ammeter doesn't show the number. What to do with only one ammeter. There was no complaint. I drew a general parallel diagram

The quantity to be measured includes the current of main circuit and the current of two branches;
If there is only one ammeter, measure it separately: first put it on the main circuit, then turn off the switch, put it on the branch circuit, and measure it again
The lamp is not on, and the ammeter does not show the number, which indicates that there is short circuit and open circuit in the circuit: the ammeter is short circuited or the lamp of the measured branch is open circuit. This question is not very clear, and it does not indicate under what circumstances (when measuring the branch or the trunk)