When a moving coil galvanometer has a resistance of 20 ohms and gives full scale deflection of 1.5mA.calculate the potential difference across its terminals when the current is flowing
To calculate the potential difference across the terminals of the moving coil galvanometer, you need to use Ohm's Law which states that V = I * R, where V is the potential difference (voltage), I is the current, and R is the resistance.
In this case, the given full scale deflection current (I) is 1.5 mA, which can be converted to Amperes by dividing it by 1000, resulting in I = 0.0015 A.
The resistance (R) of the moving coil galvanometer is given as 20 ohms.
Using Ohm's Law, we can calculate the potential difference (V) as follows:
V = I * R
V = 0.0015 A * 20 ohms
V = 0.03 volts
Therefore, when the current is flowing through the moving coil galvanometer, the potential difference across its terminals is 0.03 volts.
To calculate the potential difference across the terminals of a moving coil galvanometer, you need to use Ohm's Law, which states that V = I * R, where V is the potential difference (voltage), I is the current flowing through the galvanometer, and R is the resistance of the galvanometer.
Given:
Resistance of the galvanometer (R) = 20 ohms
Full-scale deflection current (I) = 1.5 mA = 0.0015 A
Now, substitute the given values into Ohm's Law equation:
V = I * R
V = 0.0015 A * 20 ohms
V = 0.03 volts
Therefore, the potential difference across the terminals of the moving coil galvanometer when the current is flowing is 0.03 volts.