Question

heating coil of resistance 115 ohm works in 230 V
a)calculate the current in the circuit.

B)write the equations to calculate the heat generated in a circuit carrying conductor.

C)calculate the heat generated in 5minutes.

D)write the equations to calculate the electric power.

E)calculate the power of this divice.​

Answer 1

I = V/R

CURRENT= 230/115 = 2A

time =5×60=300seconds

H=I^2Rt or V^t/R or VIt

H = 230× 2×300(VIT)=460×300=138000j

P=VI or V^2/R or R×I^2

power of device = 230×2=460w

A : 2A

B : H=I^2Rt or V^t/R or VIt

C : 138000j

D : P=VI or V^2/R or R×I^2

E : 460w