Calculating current flowing through a circuit and voltage drop?!

[Daniel280599]

My question is if the current going through the three lamps is 25mA EACH then what is the total current flowing through the circuit and and what is the voltage drop across the variable resistor. L Please could anyone show me how its done. Thanks.

 

[Arouse1973]

I think you can answer the first question yourself, think about the word EACH.
Adam

 

[Daniel280599]

I think you can answer the first question yourself, think about the word EACH.
Adam

Do I just add them?

 

[duke37]

The lamps look to be in parallel to me so adding would be the right thing to do.
What then would be the voltage across the 100Ω resistor?

 

[Daniel280599]

7.5v?

 

[davenn]

7.5v?

show us your working so we know you understand the process, rather than it just being a guess

Dave