Ammeters are connected in series with a circuit battery and resistor to measure the current flowing through the circuit. To measure the current accurately, the ammeter must be placed in line with the other components, ensuring that all the current passing through the battery and resistor also flows through the ammeter. This series connection allows the ammeter to measure the total current in the circuit without significantly affecting the circuit’s operation.
An ammeter is connected to a resistor by placing it in series with the resistor. This means that the ammeter is inserted directly into the path of the current flow, between the power source and the resistor, or between two points of the circuit where the current needs to be measured. This configuration ensures that the ammeter measures the current flowing through the resistor, providing accurate current readings.
To connect an ammeter to a battery, the ammeter must be placed in series with the battery and the rest of the circuit components. This involves breaking the circuit at a point where the current is to be measured and connecting the ammeter’s terminals to the two ends of the break. This setup allows the current from the battery to flow through the ammeter, enabling it to measure the current accurately.
In a circuit, as taught in class 10, an ammeter is connected in series with the components of the circuit. This means that the ammeter is inserted into the circuit such that the current flows through it. Typically, one terminal of the ammeter is connected to the positive terminal of the battery or power source, and the other terminal is connected to the input side of the circuit component, ensuring that the entire current to be measured flows through the ammeter.
The ammeter cannot be connected across a battery or a resistor in a circuit because it is designed to measure current, not voltage. Connecting an ammeter across a component or power source, which means placing it in parallel, would result in a very low resistance path due to the ammeter’s low internal resistance. This could cause a large current to flow through the ammeter, potentially damaging it and causing a short circuit. Ammeters must always be connected in series to measure the current correctly and safely.