# Physics

1)Bulb P is rated 60 W, 110 V and bulb Q is rated 100 W, 110 V. Which of the bulbs has the higher resistance?

A)they have the same
B)cannot be determined
C)bulb P
D)bulb Q

I got C. b/c of higher potential difference.

2)A battery of 10.0 V is connected across a resistor of 40.0. Calculate the power delivered to the resistor.

A)400 W
B)10 W
C)2.5 W
D)25 W

10^2/40.0

I got A

1. 👍 0
2. 👎 0
3. 👁 116
1. On the first, potential difference has nothing to do with it.

Resistance=voltage ^2/powerrating

On the second, no

Power= 10^2/40. That is not 400

1. 👍 0
2. 👎 0
2. I meant C on 2.

1. 👍 0
2. 👎 0
posted by Jon

## Similar Questions

1. ### Physics

Bulb P is rated 60 W, 110 V, and bulb Q is rated 100 W, and 110 V. Which of the bulbs has the higher resistance? they have the same cannot be determined bulb P bulb Q I had they have the same.

asked by Jane on May 7, 2008
2. ### Physics

A conventinal light bulb is rated at 240 V (100 W).Ligths is emitted when the filament of the bulb gets whites hot.How many joules of energy does bulb transform each minute?

asked by Fanih on August 23, 2015
3. ### economics

i have some questions please help Transportation equipment that was purchased in 2004 for \$200,000 must be replaced at the end of 2009. what is the estimated cost of the replacement, based on, the following equipment cost index:

asked by William on June 3, 2010
4. ### physical Science

When a light bulb is rated at 60 W ft what do this mean?

asked by ashley on February 16, 2012
5. ### physics

What are the maximum values of the following when an incandescent 55-W light bulb (at 110 V) is connected to a wall plug labeled 110 V?

asked by Sophia on August 3, 2011
6. ### Science

What is the meaning of bulb rated 10w~220v?

asked by sonika on September 7, 2016
7. ### Science

Whatis the meaning of bulb rated 10w~220v?

asked by sonika on September 7, 2016
8. ### physics

a 230v/30v with 50Hz transformer that has a primary current of 0.6A which supplys number of 30v and 30 watts halogen light bulb. find the maximum number of bulb can operate. assume that its an ideal transformer and can operate

asked by mike on December 12, 2018
9. ### Physics

a 230v/30v with 50Hz transformer that has a primary current of 0.6A which supplys number of 30v and 30 watts halogen light bulb. find the maximum number of bulb can operate. assume that its an ideal transformer and can operate

asked by Mike on December 12, 2018
10. ### Physical Science

A lamp bulb is rated 100w. Why is a time factor not included in the rating?

asked by Barbara on September 9, 2014

More Similar Questions