Galvanometer vs. Voltmeter — What's the Difference?

A Galvanometer is a device designed to detect and measure small electric currents. On the other hand, a Voltmeter is specifically crafted to measure the electric potential difference between two points in a circuit. The essence of the Galvanometer is its sensitivity to low current values, while the Voltmeter primarily quantifies voltage.

Both the Galvanometer and Voltmeter are quintessential instruments in the realm of electronics and electrical measurements. However, their operational principles and purposes diverge significantly. A Galvanometer utilizes the magnetic effect of current to generate a deflection on its needle, indicating the current's presence and magnitude. Conversely, a Voltmeter, often designed using a Galvanometer internally, has additional resistance to measure voltage across points.

In practical applications, a Galvanometer might be found in laboratories or experimental setups to gauge minute currents. A Voltmeter, ubiquitous in its presence, is a staple in many toolkits, ranging from professional electrician kits to DIY home repair sets. It's also crucial to note that while a Galvanometer provides an indication of current flow direction, a Voltmeter merely quantifies voltage magnitude without directional insight.

Distinguishing between a Galvanometer and a Voltmeter is fundamental for anyone working in electrical domains. A Galvanometer's sensitivity makes it invaluable for detecting slight currents, while a Voltmeter's utility lies in its ability to evaluate voltage levels across circuit components.