Why a dc voltmeter and dc ammeter cannot read ac?

Why do d.c. voltmeter and d.c. ammeter cannot read a.c.?

Why a DC ammeter cannot read AC?

An ideal voltmeter V and ideal ammeter A are connected in a circuit as shown in the figure. If the reading of the voltmeter is 32 V, the reading of ammeter will be

In the given circuit, the ratio of voltmeter reading to the ammeter reading is R' . If resistance of ammeter is RA and that of voltmeter RV , then

In the circuit shown, the reading of the voltmeter and the ammeter are