An AC source is rated $222 \,V , 60 \,Hz$. The average voltage is calculated in a time interval of $16.67 \,ms$. It
Must be zero
May be zero
Is never zero
Is $(111 \sqrt{2}) \,V$
What will be $r.m.s.$ value of given $A.C.$ over one cycle.
Find the rms value for the saw-tooth voltage of peak value $V_0$ from $t = 0$ to $t = 2T$ as shown in figure
In a circuit, the value of the alternating current is measured by hot wire ammeter as $10$ ampere. Its peak value will be......$A$
Assertion : Ohm’s law cannot be applied to $a.c$ circuit.
Reason : Resistance offered by capacitor for a.c source depends upon the frequency of the source.
Two cables of copper are of equal lengths. One of them has a single wire of area of cross-section $A$, while other has $10$ wires of cross-sectional area $A / 10$ each. Give their suitability for transporting $A.C.$ and $D.C.$