Question

consider a lamp with 100 w light a 200 w television and a 1800 haire dryer with all three wires paraller and pluggedina single 120 v electrical outlet in your room. when all devices are on what would the current in tge circuit be and would it be enough to blow your homes 20 A circuit breaker or fuse?

options are

17.5 no

23.1 a yes

21.8 yes

24.7 yes

19.4 no

18.3 no

Answer 1

For an appliance with power P having resistance R, connected with a potential difference V we have

So, resistance of each appliance is

They are connected in parallel.

So, equivalent resistance is

So, current through the circuit is

So, current in our circuit will not be enough to blow our circuit

Option 1 is correct.