A.c -5

In an electric iron heat producedm is same, whether it is connected across an A.c. source or across 50 V constant voltage. R.M.S. value of the A.C. voltage applied is

The instantaneous current from an a.c. source is l = 5 sin (314t) ampere. What are the average and rms values of the current?

A carbon and an aluminium wire are connected in series. If the combination has resistance of 30Omega at 30^@C , what is the resistance of each wire at 0^@C so that resistance of the combination does not change with temperature. (a_c=-0.5 times 10^-3//^@C,a_A=4 times 10^-3//^@C )

Distinguish between d.c. and a.c.

A : Wires of the transmission lines carrying A.C. are made of multiple stands. R : A.C. flows on surface of the conductor.

The capacitive reactance in an A.C. circuit is

If C is the midpoint of the point A(-3,-4) and B(-5,6), then AC =

State one advantage of a.c. over d.c.

Give two similarities between an A.C. generator and a D.C. motor.

Name one d.c. source and one a.c. source.