An electric room heater draws a current of 2.4 A from the 120 V supply line. What current will this room heater draw when

(a), (d). (a) zero average current. (d) voltage and current possibly differing in phase φ such that |φ|<π/2.

Does this perpendicular bisector contain another diameter of the circle - Yes

Solution :  (a) An electric currrent is a flow of electric charges (electrons) through a conductor. Potential difference between the ends of the wire makes electric current to flow in the...

V=220V, I=0.5amp, P=?  We know that P=VI=220X0.5 P=110 watt.

Given V = 230v, I = 10amp (a) P = IV P = 230 x 10 p = 2300 w = 2300 J/s (b) Energy consumed in minute = P x T = 2300...

The connecting wires of the heater get only slightly warm because they have extremely low resistance due to which negligible heat is produced in them by passing current.

(a) The appropriate value of the fuse to be fitted in the circuit is 2.5A or 3A. (b) If a 13A fuse is fitted in the circuit, it will not...

(i) A wire made of tungsten is used for filament of electric bulb because it has a high melting point and high resistivity. (ii) A nichrome wire is used as a...

Given, Power, P = 100 W Voltage, V = 250 V As power, p = VI I = 100/250 = 0.4 A

Given, Voltage, v = 220 v Current, I = 8 A Time, t = 2 h Energy, E = Vlt E = 220 × 8 × 2 = 3520 Wh ⇒ E = 3.52 kwh Cost of energy...