Question

21. It the pointer of the
voltmeter shows reading of 0.2
V when no current flows in the
circuit, the error in voltmeter is​

Answer 1

Answer:

Hope it's helps.....

If both are ideal, voltmeter has infinite resistance and hence, no current flows through the circuit. Thus ammeter will read zero and voltmeter will read 10V.

If both are ideal, voltmeter has infinite resistance and hence, no current flows through the circuit. Thus ammeter will read zero and voltmeter will read 10V.If ammeter is non ideal but voltmeter is ideal, current through circuit will be 0 and hence ammeter will read 0A and voltmeter 10V.

If both are ideal, voltmeter has infinite resistance and hence, no current flows through the circuit. Thus ammeter will read zero and voltmeter will read 10V.If ammeter is non ideal but voltmeter is ideal, current through circuit will be 0 and hence ammeter will read 0A and voltmeter 10V.If voltmeter is non ideal, finite current will flow through the circuit and hence there will be some voltage drop across the resistor. Therefore, Voltmeter will read less than 10V. Due to finite resistance of voltmeter, current will be less than 10A and hence ammeter will read less than 10A.