Physics, asked by hariitsme5, 3 months ago

An ideal voltmeter is used to measure voltage drop across 30 ohm resistor . then the reading of voltmeter is

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Answered by karthinasa5

Answer:

Let I be the current in the circuit, then I×4000=30V. If voltmeter is put across ... the resistance in ohm needed to be connected in series with the coil will be: ... Figure shows a simple potentiometer circuit for measuring a small emf produced by a thermocouple. ... If E=4V and R=15Ω and r=1Ω, then the reading of the ammeter is.

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