Homework Help: Physics

Posted by Jon on Wednesday, April 9, 2008 at 2:24pm.

1)A 15.0 resistor and a 20.0 resistor are connector in parallel. A 5.00 resistor is connected in series with this parallel arrangement. The resistors are connected across a 1.00(I think something else is suppose to be after that but its missing)10^2-V battery. What is the current flowing through the 20.0-resistor?

A)1.21 A
B)3.15 A
C)5.00 A
D)6.84 A

I got C.

2)A current of 5.0 A flows for 20.0 minutes through a bulb and delivers 15000 J of electric energy to the bulb. What is the potential difference across the bulb?

A)2.5 V
B)4 V
C)100 V
D)100 V (book typo)

I don't know what to do for this one

Physics - bobpursley, Wednesday, April 9, 2008 at 3:30pm
The first is wrong. I have no idea how you got that.

The second
energy= V*I*timeinseconds solve for v

Answer this Question

Related Questions

Physics. - A 15.0- resistor and a 20.0- resistor are connected in parallel. A 5....
Physics - 1)Four resistors of 10.0 each are connected in parallel. A combination...
physics - A 65.0-Ù resistor is connected in parallel with a 117.0-Ù...
physics - A 15.0 resistor and a 20.0 resistor are connected in parallel. A 5.00 ...
physics - A 59.0-Ω resistor is connected in parallel with a 116.0-&...
physics - A 59.0-Ω resistor is connected in parallel with a 116.0-&...
College Physics - You have 20 and 80 (unit is the upside down U) resistors in a ...
College Physics - Two 9.1 ohms resistors are connected in parallel, as are two 5...
Physics - 1)Several resistors are connected in parallel. If a battery provides ...
College physcs - Two 9.1 ohms resistors are connected in parallel, as are two 5....

For Further Reading

First Name:
School Subject:
Answer: