How do you find theoretical resistance?
Use these values in Ohm’s Law. If you know the total current and the voltage across the whole circuit, you can find the total resistance using Ohm’s Law: R = V / I. For example, a parallel circuit has a voltage of 9 volts and total current of 3 amps. The total resistance RT = 9 volts / 3 amps = 3 Ω.
What is the resistance of a voltmeter?
infinite
The resistance of an ideal voltmeter should be infinite.
Whose resistance is more ammeter or voltmeter?
Thus, out of galvanometer, voltmeter and ammeter, resistance of ammeter is lowest and resistance of voltmeter is highest. If the ammeter is connected in series, whole current flowing in the circuit flows through the ammeter with a very low resistance.
What is value of resistance in ammeter?
The resistance of an ideal ammeter should be zero. This is because an ammeter is connected in series in a circuit. Hence, it’s resistance adds to the total resistance of the circuit.
What is the relationship between ammeter and voltmeter?
An ammeter is a measuring device used to measure the electric current in a circuit. A voltmeter is connected in parallel with a device to measure its voltage, while an ammeter is connected in series with a device to measure its current.
What is the relative resistance of a good ammeter a good voltmeter explain why?
An ideal Ammeter has zero resistance and an ideal Voltmeter has infinite resistance. Think for a moment about the way in which they are typically used to measure the current and voltage in a circuit.
What is the combined resistance of ammeter and shunt?
The shunt attaches parallel to the meter, which allows the voltage to fall over the meter and the shunt remains the same. The shunt therefore does not affect the rotation of the pointer. Therefore the total resistance of the combined ammeter resistance and the shunt wire resistance is 0.16 ohm.
What is theoretical and example?
The definition of theoretical is something that is based on an assumption or opinion. An example of theoretical is lower interest rates will boost the housing market.