The current and power drawn by the load

[lemon]

Homework Statement

A 36Ω resistive load is connected to the secondary of a transformer. The terminal p.d. at the secondary is 24v. If the primary is connected to a 480v a.c. supply, calculate:

a) the transformer turns ratio
b) the current and power drawn by the load
c) the current drawn from the supply

Homework Equations

1: V=IR
2:V_p/V_s=N_p/N_s=i_p/i_s
3: N_p:N_s
P=IV

The Attempt at a Solution

a) I_s=V_s/R = 24/36=0.667A
P=0.667Ax24V=16W

b) I_p=current drawn from the supply
I_p=V_p/R = 480V/36Ω=13.3A

Not sure if I'm getting this ok
Can somebody please check - thank you

 

[lemon]

I have a solution for this thread. Please consider it closed.